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/annotation_service.py

@@ -1,5 +1,4 @@
 import uuid
-from typing import Optional
 
 import pandas as pd
 from sqlalchemy import or_, select
@@ -42,7 +41,7 @@ class AppAnnotationService:
             if not message:
                 raise NotFound("Message Not Exists.")
 
-            annotation: Optional[MessageAnnotation] = message.annotation
+            annotation: MessageAnnotation | None = message.annotation
             # save the message annotation
             if annotation:
                 annotation.content = args["answer"]