chore: add ast-grep rule to convert Optional[T] to T | None (#25560)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/core/app/features/rate_limiting/rate_limit.py

@@ -3,7 +3,7 @@ import time
 import uuid
 from collections.abc import Generator, Mapping
 from datetime import timedelta
-from typing import Any, Optional, Union
+from typing import Any, Union
 
 from core.errors.error import AppInvokeQuotaExceededError
 from extensions.ext_redis import redis_client
@@ -63,7 +63,7 @@ class RateLimit:
         if timeout_requests:
             redis_client.hdel(self.active_requests_key, *timeout_requests)
 
-    def enter(self, request_id: Optional[str] = None) -> str:
+    def enter(self, request_id: str | None = None) -> str:
         if self.disabled():
             return RateLimit._UNLIMITED_REQUEST_ID
         if time.time() - self.last_recalculate_time > RateLimit._ACTIVE_REQUESTS_COUNT_FLUSH_INTERVAL: