refac: modernize type annotations (PEP 604 / PEP 585)

backend/open_webui/models/access_grants.py

@@ -3,13 +3,11 @@ import time
 import uuid
 from typing import Optional
 
-from sqlalchemy import select, delete
-from sqlalchemy.ext.asyncio import AsyncSession
 from open_webui.internal.db import Base, get_async_db_context
-
 from pydantic import BaseModel, ConfigDict
-from sqlalchemy import BigInteger, Column, Text, UniqueConstraint, or_, and_
+from sqlalchemy import BigInteger, Column, Text, UniqueConstraint, and_, delete, or_, select
 from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.ext.asyncio import AsyncSession
 
 log = logging.getLogger(__name__)
 
@@ -623,8 +621,8 @@ class AccessGrantsTable:
         Get all users who have the specified permission on a resource.
         Returns a list of UserModel instances.
         """
-        from open_webui.models.users import Users, UserModel
         from open_webui.models.groups import Groups
+        from open_webui.models.users import UserModel, Users
 
         async with get_async_db_context(db) as db:
             result = await db.execute(