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/schedule/clean_unused_datasets_task.py

@@ -1,6 +1,6 @@
 import datetime
 import time
-from typing import Optional, TypedDict
+from typing import TypedDict
 
 import click
 from sqlalchemy import func, select
@@ -17,7 +17,7 @@ from services.feature_service import FeatureService
 
 class CleanupConfig(TypedDict):
     clean_day: datetime.datetime
-    plan_filter: Optional[str]
+    plan_filter: str | None
     add_logs: bool