fix(helpdesk): match queue name 'Wartschlange' (BC spelling without e)

BC uses 'Wartschlange Customer Care' not 'Warteschlange'. Match on
common stem 'wartschlang' to cover both spellings.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

modules/helpdesk/web/js/helpdesk-team.js

@@ -43,7 +43,7 @@ if (container) {
    * Detect queue entries — Support_User_Name contains 'warteschlange'.
    */
   function isQueueMember(m) {
-    return m.support_user === '' || m.support_user.includes('warteschlange');
+    return m.support_user === '' || m.support_user.includes('wartschlang');
   }
 
   function initials(name) {