message: Enable exceptions for the json-rpc-dispatcher.
  The underlying json library throws exceptions to report
  parse errors, so this part of the code has to be compiled
  with exceptions enabled.
diff: @@ -37,6 +37,11 @@ cc_library(
  name = "json-rpc-dispatcher",
  hdrs = ["json-rpc-dispatcher.h"],
  srcs = ["json-rpc-dispatcher.cc"],
  + copts = select({
  + "@platforms//os:windows": [],
  + "//conditions:default": ["-fexceptions"],
  + }),
  + features = ["-use_header_modules"], # precompiled headers incompatible with -fexceptions.
  deps = [
  "@com_google_absl//absl/strings",
  "@com_google_absl//absl/status",
  @@ -48,6 +53,11 @@ cc_library(
  cc_test(
  name = "json-rpc-dispatcher_test",
  srcs = ["json-rpc-dispatcher_test.cc"],
  + copts = select({
  + "@platforms//os:windows": [],
  + "//conditions:default": ["-fexceptions"],
  + }),
  + features = ["-use_header_modules"], # precompiled headers incompatible with -fexceptions.
  deps = [
  ":json-rpc-dispatcher",
  "@com_google_absl//absl/strings",
  