fix: repair cherry-pick breakages from PR #24823

- Add LITELLM_UI_SESSION_DURATION to constants.py (exists in main but not stable branch)
- Add user_api_key_dict parameter to _get_user_info_for_proxy_admin and update caller
- Fix return statement to use admin_user_id/admin_user_info instead of None

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

litellm/constants.py

@@ -1461,3 +1461,4 @@ MICROSOFT_USER_FIRST_NAME_ATTRIBUTE = str(
 MICROSOFT_USER_LAST_NAME_ATTRIBUTE = str(
     os.getenv("MICROSOFT_USER_LAST_NAME_ATTRIBUTE", "surname")
 )
+LITELLM_UI_SESSION_DURATION = str(os.getenv("LITELLM_UI_SESSION_DURATION", "24hr"))

litellm/proxy/management_endpoints/internal_user_endpoints.py

@@ -630,7 +630,7 @@ async def user_info(
             user_id is None
             and user_api_key_dict.user_role == LitellmUserRoles.PROXY_ADMIN
         ):
-            return await _get_user_info_for_proxy_admin()
+            return await _get_user_info_for_proxy_admin(user_api_key_dict=user_api_key_dict)
         elif user_id is None:
             user_id = user_api_key_dict.user_id
         ## GET USER ROW ##
@@ -732,7 +732,7 @@ async def user_info(
         raise handle_exception_on_proxy(e)
 
 
-async def _get_user_info_for_proxy_admin():
+async def _get_user_info_for_proxy_admin(user_api_key_dict: UserAPIKeyAuth):
     """
     Admin UI Endpoint - Returns All Teams and Keys when Proxy Admin is querying
 
@@ -790,8 +790,8 @@ async def _get_user_info_for_proxy_admin():
 
 
     return UserInfoResponse(
-        user_id=None,
-        user_info=None,
+        user_id=admin_user_id,
+        user_info=admin_user_info,
         keys=returned_keys,
         teams=_teams_in_db,
     )