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/ops/opik_trace/opik_trace.py

@@ -2,7 +2,7 @@ import logging
 import os
 import uuid
 from datetime import datetime, timedelta
-from typing import Optional, cast
+from typing import cast
 
 from opik import Opik, Trace
 from opik.id_helpers import uuid4_to_uuid7
@@ -47,7 +47,7 @@ def wrap_metadata(metadata, **kwargs):
     return metadata
 
 
-def prepare_opik_uuid(user_datetime: Optional[datetime], user_uuid: Optional[str]):
+def prepare_opik_uuid(user_datetime: datetime | None, user_uuid: str | None):
     """Opik needs UUIDv7 while Dify uses UUIDv4 for identifier of most
     messages and objects. The type-hints of BaseTraceInfo indicates that
     objects start_time and message_id could be null which means we cannot map
@@ -264,7 +264,7 @@ class OpikDataTrace(BaseTraceInstance):
     def message_trace(self, trace_info: MessageTraceInfo):
         # get message file data
         file_list = cast(list[str], trace_info.file_list) or []
-        message_file_data: Optional[MessageFile] = trace_info.message_file_data
+        message_file_data: MessageFile | None = trace_info.message_file_data
 
         if message_file_data is not None:
             file_url = f"{self.file_base_url}/{message_file_data.url}" if message_file_data else ""
@@ -282,7 +282,7 @@ class OpikDataTrace(BaseTraceInstance):
         metadata["file_list"] = file_list
 
         if message_data.from_end_user_id:
-            end_user_data: Optional[EndUser] = (
+            end_user_data: EndUser | None = (
                 db.session.query(EndUser).where(EndUser.id == message_data.from_end_user_id).first()
             )
             if end_user_data is not None: