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/services/tools/tools_transform_service.py

@@ -1,6 +1,6 @@
 import json
 import logging
-from typing import Any, Optional, Union, cast
+from typing import Any, Union, cast
 
 from yarl import URL
 
@@ -94,7 +94,7 @@ class ToolTransformService:
     def builtin_provider_to_user_provider(
         cls,
         provider_controller: BuiltinToolProviderController | PluginToolProviderController,
-        db_provider: Optional[BuiltinToolProvider],
+        db_provider: BuiltinToolProvider | None,
         decrypt_credentials: bool = True,
     ) -> ToolProviderApiEntity:
         """