We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Deprecate the ProjectCombinedRuleIndexEndpoint
[GCP API access logs](https://console.cloud.google.com/logs/query;query=resource.type%20%3D%20k8s_container%0Aresource.labels.namespace_name%20%3D%20default%0Aresource.labels.container_name%20%3D%20sentry%0Alabels.name%20%3D%20sentry.access.api%0AjsonPayload.view%3D~%22ProjectCombinedRuleIndexEndpoint%22;summaryFields=:true:32:beginning;lfeCustomFields=jsonPayload%252Fview,jsonPayload%252Forganization_id;cursorTimestamp=2023-09-06T18:29:05.855473577Z;startTime=2023-09-06T16:51:17.461Z;endTime=2023-09-06T23:51:17.461482Z?project=internal-sentry) show that it's not used by us, and only by 2 customers. It's an undocumented endpoint so we can [set the deprecation header](https://www.notion.so/sentry/Sentry-API-Deprecation-Policy-ccbdea15a34c4fdeb50985685adc3368) and get rid of it. 

Related to https://github.com/getsentry/sentry/issues/54005

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `src/sentry/incidents/endpoints/project_alert_rule_index.py`
Content:
```
1 from __future__ import annotations
2 
3 from rest_framework.request import Request
4 from rest_framework.response import Response
5 
6 from sentry import features
7 from sentry.api.api_publish_status import ApiPublishStatus
8 from sentry.api.base import region_silo_endpoint
9 from sentry.api.bases.project import ProjectAlertRulePermission, ProjectEndpoint
10 from sentry.api.paginator import CombinedQuerysetIntermediary, CombinedQuerysetPaginator
11 from sentry.api.serializers import CombinedRuleSerializer, serialize
12 from sentry.constants import ObjectStatus
13 from sentry.incidents.endpoints.organization_alert_rule_index import AlertRuleIndexMixin
14 from sentry.incidents.models import AlertRule
15 from sentry.models.rule import Rule
16 from sentry.snuba.dataset import Dataset
17 
18 
19 @region_silo_endpoint
20 class ProjectCombinedRuleIndexEndpoint(ProjectEndpoint):
21     publish_status = {
22         "GET": ApiPublishStatus.UNKNOWN,
23     }
24 
25     def get(self, request: Request, project) -> Response:
26         """
27         Fetches alert rules and legacy rules for a project
28         """
29         alert_rules = AlertRule.objects.fetch_for_project(project)
30         if not features.has("organizations:performance-view", project.organization):
31             # Filter to only error alert rules
32             alert_rules = alert_rules.filter(snuba_query__dataset=Dataset.Events.value)
33 
34         alert_rule_intermediary = CombinedQuerysetIntermediary(alert_rules, ["date_added"])
35         rule_intermediary = CombinedQuerysetIntermediary(
36             Rule.objects.filter(
37                 project=project,
38                 status=ObjectStatus.ACTIVE,
39             ),
40             ["date_added"],
41         )
42 
43         return self.paginate(
44             request,
45             paginator_cls=CombinedQuerysetPaginator,
46             on_results=lambda x: serialize(x, request.user, CombinedRuleSerializer()),
47             default_per_page=25,
48             intermediaries=[alert_rule_intermediary, rule_intermediary],
49             desc=True,
50         )
51 
52 
53 @region_silo_endpoint
54 class ProjectAlertRuleIndexEndpoint(ProjectEndpoint, AlertRuleIndexMixin):
55     publish_status = {
56         "GET": ApiPublishStatus.UNKNOWN,
57         "POST": ApiPublishStatus.UNKNOWN,
58     }
59     permission_classes = (ProjectAlertRulePermission,)
60 
61     def get(self, request: Request, project) -> Response:
62         """
63         Fetches metric alert rules for a project - @deprecated. Use OrganizationAlertRuleIndexEndpoint instead.
64         """
65         return self.fetch_metric_alert(request, project.organization, project)
66 
67     def post(self, request: Request, project) -> Response:
68         """
69         Create an alert rule - @deprecated. Use OrganizationAlertRuleIndexEndpoint instead.
70         """
71         return self.create_metric_alert(request, project.organization, project)
72
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/src/sentry/incidents/endpoints/project_alert_rule_index.py b/src/sentry/incidents/endpoints/project_alert_rule_index.py
--- a/src/sentry/incidents/endpoints/project_alert_rule_index.py
+++ b/src/sentry/incidents/endpoints/project_alert_rule_index.py
@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from datetime import datetime
+
 from rest_framework.request import Request
 from rest_framework.response import Response
 
@@ -7,6 +9,7 @@
 from sentry.api.api_publish_status import ApiPublishStatus
 from sentry.api.base import region_silo_endpoint
 from sentry.api.bases.project import ProjectAlertRulePermission, ProjectEndpoint
+from sentry.api.helpers.deprecation import deprecated
 from sentry.api.paginator import CombinedQuerysetIntermediary, CombinedQuerysetPaginator
 from sentry.api.serializers import CombinedRuleSerializer, serialize
 from sentry.constants import ObjectStatus
@@ -18,13 +21,15 @@
 
 @region_silo_endpoint
 class ProjectCombinedRuleIndexEndpoint(ProjectEndpoint):
+    DEPRECATION_DATE = datetime.fromisoformat("2024-02-07T00:00:00+00:00:00")
     publish_status = {
         "GET": ApiPublishStatus.UNKNOWN,
     }
 
+    @deprecated(DEPRECATION_DATE, "sentry-api-0-organization-combined-rules")
     def get(self, request: Request, project) -> Response:
         """
-        Fetches alert rules and legacy rules for a project
+        Fetches alert rules and legacy rules for a project. @deprecated. Use OrganizationCombinedRuleIndexEndpoint instead.
         """
         alert_rules = AlertRule.objects.fetch_for_project(project)
         if not features.has("organizations:performance-view", project.organization):

{"golden_diff": "diff --git a/src/sentry/incidents/endpoints/project_alert_rule_index.py b/src/sentry/incidents/endpoints/project_alert_rule_index.py\n--- a/src/sentry/incidents/endpoints/project_alert_rule_index.py\n+++ b/src/sentry/incidents/endpoints/project_alert_rule_index.py\n@@ -1,5 +1,7 @@\n from __future__ import annotations\n \n+from datetime import datetime\n+\n from rest_framework.request import Request\n from rest_framework.response import Response\n \n@@ -7,6 +9,7 @@\n from sentry.api.api_publish_status import ApiPublishStatus\n from sentry.api.base import region_silo_endpoint\n from sentry.api.bases.project import ProjectAlertRulePermission, ProjectEndpoint\n+from sentry.api.helpers.deprecation import deprecated\n from sentry.api.paginator import CombinedQuerysetIntermediary, CombinedQuerysetPaginator\n from sentry.api.serializers import CombinedRuleSerializer, serialize\n from sentry.constants import ObjectStatus\n@@ -18,13 +21,15 @@\n \n @region_silo_endpoint\n class ProjectCombinedRuleIndexEndpoint(ProjectEndpoint):\n+    DEPRECATION_DATE = datetime.fromisoformat(\"2024-02-07T00:00:00+00:00:00\")\n     publish_status = {\n         \"GET\": ApiPublishStatus.UNKNOWN,\n     }\n \n+    @deprecated(DEPRECATION_DATE, \"sentry-api-0-organization-combined-rules\")\n     def get(self, request: Request, project) -> Response:\n         \"\"\"\n-        Fetches alert rules and legacy rules for a project\n+        Fetches alert rules and legacy rules for a project. @deprecated. Use OrganizationCombinedRuleIndexEndpoint instead.\n         \"\"\"\n         alert_rules = AlertRule.objects.fetch_for_project(project)\n         if not features.has(\"organizations:performance-view\", project.organization):\n", "issue": "Deprecate the ProjectCombinedRuleIndexEndpoint\n[GCP API access logs](https://console.cloud.google.com/logs/query;query=resource.type%20%3D%20k8s_container%0Aresource.labels.namespace_name%20%3D%20default%0Aresource.labels.container_name%20%3D%20sentry%0Alabels.name%20%3D%20sentry.access.api%0AjsonPayload.view%3D~%22ProjectCombinedRuleIndexEndpoint%22;summaryFields=:true:32:beginning;lfeCustomFields=jsonPayload%252Fview,jsonPayload%252Forganization_id;cursorTimestamp=2023-09-06T18:29:05.855473577Z;startTime=2023-09-06T16:51:17.461Z;endTime=2023-09-06T23:51:17.461482Z?project=internal-sentry) show that it's not used by us, and only by 2 customers. It's an undocumented endpoint so we can [set the deprecation header](https://www.notion.so/sentry/Sentry-API-Deprecation-Policy-ccbdea15a34c4fdeb50985685adc3368) and get rid of it. \n\nRelated to https://github.com/getsentry/sentry/issues/54005\n", "before_files": [{"content": "from __future__ import annotations\n\nfrom rest_framework.request import Request\nfrom rest_framework.response import Response\n\nfrom sentry import features\nfrom sentry.api.api_publish_status import ApiPublishStatus\nfrom sentry.api.base import region_silo_endpoint\nfrom sentry.api.bases.project import ProjectAlertRulePermission, ProjectEndpoint\nfrom sentry.api.paginator import CombinedQuerysetIntermediary, CombinedQuerysetPaginator\nfrom sentry.api.serializers import CombinedRuleSerializer, serialize\nfrom sentry.constants import ObjectStatus\nfrom sentry.incidents.endpoints.organization_alert_rule_index import AlertRuleIndexMixin\nfrom sentry.incidents.models import AlertRule\nfrom sentry.models.rule import Rule\nfrom sentry.snuba.dataset import Dataset\n\n\n@region_silo_endpoint\nclass ProjectCombinedRuleIndexEndpoint(ProjectEndpoint):\n    publish_status = {\n        \"GET\": ApiPublishStatus.UNKNOWN,\n    }\n\n    def get(self, request: Request, project) -> Response:\n        \"\"\"\n        Fetches alert rules and legacy rules for a project\n        \"\"\"\n        alert_rules = AlertRule.objects.fetch_for_project(project)\n        if not features.has(\"organizations:performance-view\", project.organization):\n            # Filter to only error alert rules\n            alert_rules = alert_rules.filter(snuba_query__dataset=Dataset.Events.value)\n\n        alert_rule_intermediary = CombinedQuerysetIntermediary(alert_rules, [\"date_added\"])\n        rule_intermediary = CombinedQuerysetIntermediary(\n            Rule.objects.filter(\n                project=project,\n                status=ObjectStatus.ACTIVE,\n            ),\n            [\"date_added\"],\n        )\n\n        return self.paginate(\n            request,\n            paginator_cls=CombinedQuerysetPaginator,\n            on_results=lambda x: serialize(x, request.user, CombinedRuleSerializer()),\n            default_per_page=25,\n            intermediaries=[alert_rule_intermediary, rule_intermediary],\n            desc=True,\n        )\n\n\n@region_silo_endpoint\nclass ProjectAlertRuleIndexEndpoint(ProjectEndpoint, AlertRuleIndexMixin):\n    publish_status = {\n        \"GET\": ApiPublishStatus.UNKNOWN,\n        \"POST\": ApiPublishStatus.UNKNOWN,\n    }\n    permission_classes = (ProjectAlertRulePermission,)\n\n    def get(self, request: Request, project) -> Response:\n        \"\"\"\n        Fetches metric alert rules for a project - @deprecated. Use OrganizationAlertRuleIndexEndpoint instead.\n        \"\"\"\n        return self.fetch_metric_alert(request, project.organization, project)\n\n    def post(self, request: Request, project) -> Response:\n        \"\"\"\n        Create an alert rule - @deprecated. Use OrganizationAlertRuleIndexEndpoint instead.\n        \"\"\"\n        return self.create_metric_alert(request, project.organization, project)\n", "path": "src/sentry/incidents/endpoints/project_alert_rule_index.py"}], "after_files": [{"content": "from __future__ import annotations\n\nfrom datetime import datetime\n\nfrom rest_framework.request import Request\nfrom rest_framework.response import Response\n\nfrom sentry import features\nfrom sentry.api.api_publish_status import ApiPublishStatus\nfrom sentry.api.base import region_silo_endpoint\nfrom sentry.api.bases.project import ProjectAlertRulePermission, ProjectEndpoint\nfrom sentry.api.helpers.deprecation import deprecated\nfrom sentry.api.paginator import CombinedQuerysetIntermediary, CombinedQuerysetPaginator\nfrom sentry.api.serializers import CombinedRuleSerializer, serialize\nfrom sentry.constants import ObjectStatus\nfrom sentry.incidents.endpoints.organization_alert_rule_index import AlertRuleIndexMixin\nfrom sentry.incidents.models import AlertRule\nfrom sentry.models.rule import Rule\nfrom sentry.snuba.dataset import Dataset\n\n\n@region_silo_endpoint\nclass ProjectCombinedRuleIndexEndpoint(ProjectEndpoint):\n    DEPRECATION_DATE = datetime.fromisoformat(\"2024-02-07T00:00:00+00:00:00\")\n    publish_status = {\n        \"GET\": ApiPublishStatus.UNKNOWN,\n    }\n\n    @deprecated(DEPRECATION_DATE, \"sentry-api-0-organization-combined-rules\")\n    def get(self, request: Request, project) -> Response:\n        \"\"\"\n        Fetches alert rules and legacy rules for a project. @deprecated. Use OrganizationCombinedRuleIndexEndpoint instead.\n        \"\"\"\n        alert_rules = AlertRule.objects.fetch_for_project(project)\n        if not features.has(\"organizations:performance-view\", project.organization):\n            # Filter to only error alert rules\n            alert_rules = alert_rules.filter(snuba_query__dataset=Dataset.Events.value)\n\n        alert_rule_intermediary = CombinedQuerysetIntermediary(alert_rules, [\"date_added\"])\n        rule_intermediary = CombinedQuerysetIntermediary(\n            Rule.objects.filter(\n                project=project,\n                status=ObjectStatus.ACTIVE,\n            ),\n            [\"date_added\"],\n        )\n\n        return self.paginate(\n            request,\n            paginator_cls=CombinedQuerysetPaginator,\n            on_results=lambda x: serialize(x, request.user, CombinedRuleSerializer()),\n            default_per_page=25,\n            intermediaries=[alert_rule_intermediary, rule_intermediary],\n            desc=True,\n        )\n\n\n@region_silo_endpoint\nclass ProjectAlertRuleIndexEndpoint(ProjectEndpoint, AlertRuleIndexMixin):\n    publish_status = {\n        \"GET\": ApiPublishStatus.UNKNOWN,\n        \"POST\": ApiPublishStatus.UNKNOWN,\n    }\n    permission_classes = (ProjectAlertRulePermission,)\n\n    def get(self, request: Request, project) -> Response:\n        \"\"\"\n        Fetches metric alert rules for a project - @deprecated. Use OrganizationAlertRuleIndexEndpoint instead.\n        \"\"\"\n        return self.fetch_metric_alert(request, project.organization, project)\n\n    def post(self, request: Request, project) -> Response:\n        \"\"\"\n        Create an alert rule - @deprecated. Use OrganizationAlertRuleIndexEndpoint instead.\n        \"\"\"\n        return self.create_metric_alert(request, project.organization, project)\n", "path": "src/sentry/incidents/endpoints/project_alert_rule_index.py"}]}