restore the single registration for 'prevent_session_admins_to_manage_all_users' - refs BT#9324

main/admin/add_users_to_session.php

@@ -95,6 +95,12 @@ function search_users($needle, $type)
             $showOfficialCode = true;
             $order_clause = ' ORDER BY official_code, firstname, lastname, username';
         }
+        if (api_is_session_admin()
+            && isset($_configuration['prevent_session_admins_to_manage_all_users'])
+            && $_configuration['prevent_session_admins_to_manage_all_users'] == 'true'
+        ) {
+            $order_clause = " AND user.creator_id = " . api_get_user_id() . $order_clause;
+        }
 
         $cond_user_id = '';