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/tests/integration_tests/workflow/nodes/test_parameter_extractor.py

@@ -1,7 +1,6 @@
 import os
 import time
 import uuid
-from typing import Optional
 from unittest.mock import MagicMock
 
 from core.app.entities.app_invoke_entities import InvokeFrom
@@ -29,7 +28,7 @@ def get_mocked_fetch_memory(memory_text: str):
             human_prefix: str = "Human",
             ai_prefix: str = "Assistant",
             max_token_limit: int = 2000,
-            message_limit: Optional[int] = None,
+            message_limit: int | None = None,
         ):
             return memory_text