refac: oauth_sub -> oauth migration

backend/open_webui/models/auths.py

@@ -88,7 +88,7 @@ class AuthsTable:
         name: str,
         profile_image_url: str = "/user.png",
         role: str = "pending",
-        oauth_sub: Optional[str] = None,
+        oauth: Optional[dict] = None,
     ) -> Optional[UserModel]:
         with get_db() as db:
             log.info("insert_new_auth")
@@ -102,7 +102,7 @@ class AuthsTable:
             db.add(result)
 
             user = Users.insert_new_user(
-                id, name, email, profile_image_url, role, oauth_sub
+                id, name, email, profile_image_url, role, oauth=oauth
             )
 
             db.commit()