refactor(services): replace Union with | syntax in service layer (batch 2) (#34906)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/core/plugin/backwards_invocation/app.py

@@ -1,6 +1,6 @@
 import uuid
 from collections.abc import Generator, Mapping
-from typing import Any, Union, cast
+from typing import Any, cast
 
 from sqlalchemy import select
 from sqlalchemy.orm import Session
@@ -207,7 +207,7 @@ class PluginAppBackwardsInvocation(BaseBackwardsInvocation):
         )
 
     @classmethod
-    def _get_user(cls, user_id: str) -> Union[EndUser, Account]:
+    def _get_user(cls, user_id: str) -> EndUser | Account:
         """
         get the user by user id
         """

api/core/tools/tool_file_manager.py

@@ -6,7 +6,6 @@ import os
 import time
 from collections.abc import Generator
 from mimetypes import guess_extension, guess_type
-from typing import Union
 from uuid import uuid4
 
 import httpx
@@ -158,7 +157,7 @@ class ToolFileManager:
 
         return tool_file
 
-    def get_file_binary(self, id: str) -> Union[tuple[bytes, str], None]:
+    def get_file_binary(self, id: str) -> tuple[bytes, str] | None:
         """
         get file binary
 
@@ -176,7 +175,7 @@ class ToolFileManager:
 
         return blob, tool_file.mimetype
 
-    def get_file_binary_by_message_file_id(self, id: str) -> Union[tuple[bytes, str], None]:
+    def get_file_binary_by_message_file_id(self, id: str) -> tuple[bytes, str] | None:
         """
         get file binary