control_flow_ops_test unit test is flaky
Fixed by merge of #60638  Are you satisfied with the resolution of your issue?
<a href="https://docs.google.com/forms/d/e/1FAIpQLSfaP12TRhd9xSxjXZjcZFNXPGk4kc1-qMdv3gc6bEP90vY1ew/viewform?entry.85265664=Yes&entry.2137816233=https://github.com/tensorflow/tensorflow/issues/60629">Yes</a>
<a href="https://docs.google.com/forms/d/e/1FAIpQLSfaP12TRhd9xSxjXZjcZFNXPGk4kc1-qMdv3gc6bEP90vY1ew/viewform?entry.85265664=No&entry.2137816233=https://github.com/tensorflow/tensorflow/issues/60629">No</a>
 #60638 was undone along with removing flaky flag from other tests, so this issue still needs addressing.
<details><summary>Click to expand!</summary> 
 
 ### Issue Type

Bug

### Have you reproduced the bug with TF nightly?

Yes

### Source

source

### Tensorflow Version

git HEAD

### Custom Code

No

### OS Platform and Distribution

Ubuntu 20.04

### Mobile device

n/a

### Python version

3.9.16

### Bazel version

5.3.0

### GCC/Compiler version

10.2.1

### CUDA/cuDNN version

n/a

### GPU model and memory

n/a

### Current Behaviour?

//tensorflow/python/ops/parallel_for:control_flow_ops_test fails occasionally due to difference exceeding tolerance.

See https://github.com/tensorflow/tensorflow/actions/runs/5012758324/jobs/8985082872#step:5:29789



### Standalone code to reproduce the issue

```shell
bazel test --build_tests_only --config=mkl_aarch64_threadpool --copt=-flax-vector-conversions --test_env=TF_ENABLE_ONEDNN_OPTS=1 --test_env=TF2_BEHAVIOR=1 --define=no_tensorflow_py_deps=true --test_lang_filters=py --test_size_filters=small,medium --test_output=errors --verbose_failures=true --test_keep_going --notest_verbose_timeout_warnings --local_test_jobs=64 --test_tag_filters=-nopip,-no_pip,-oss_serial,-no_oss,-oss_excluded,-v1only,-benchmark-test,-no_aarch64,-no_oss_py38,-no_oss_py39,-no_oss_py310 -k -- //bazel_pip/tensorflow/... -//bazel_pip/tensorflow/compiler/tf2tensorrt/... -//bazel_pip/tensorflow/compiler/xrt/... -//bazel_pip/tensorflow/core/tpu/... -//bazel_pip/tensorflow/go/... -//bazel_pip/tensorflow/java/... -//bazel_pip/tensorflow/python/integration_testing/... -//bazel_pip/tensorflow/tools/toolchains/... -//bazel_pip/tensorflow/lite/... -//bazel_pip/tensorflow/python/kernel_tests/nn_ops:atrous_conv2d_test -//bazel_pip/tensorflow/python/kernel_tests/nn_ops:conv_ops_test
```


### Relevant log output

```shell
AssertionError: 
Not equal to tolerance rtol=0.0001, atol=1e-05
Mismatched value: a is different from b. 
not close where = (array([0]), array([0]), array([0]), array([1]), array([4]), array([0]))
not close lhs = [0.]
not close rhs = [0.77603436]
not close dif = [0.77603436]
not close tol = [8.760343e-05]
dtype = float32, shape = (3, 3, 2, 12, 12, 3)
Mismatched elements: 1 / 7776 (0.0129%)
Max absolute difference: 0.77603436
Max relative difference: 1.
 x: array([[[[[[0.      , 0.      , 0.712515],
           [0.      , 0.889897, 0.      ],
           [0.      , 0.      , 0.      ],...
 y: array([[[[[[0.      , 0.      , 0.712515],
           [0.      , 0.889897, 0.      ],
           [0.      , 0.      , 0.      ],...
```
</details>