message: statsd: revert visibility to public
  Commit Message: reverts visibility of the statd sink to public.
  Risk Level: low
  Testing: local build, CI
diff: @@ -16,10 +16,6 @@ envoy_cc_extension(
  hdrs = ["config.h"],
  security_posture = "data_plane_agnostic",
  # Legacy test use. TODO(#9953) clean up.
  - visibility = [
  - "//:extension_config",
  - "//test/server:__subpackages__",
  - ],
  deps = [
  "//include/envoy/registry",
  "//source/common/network:address_lib",
  