fix: properly forward return urls where missing

src/Controller/Administrative/Disposition/BusProNetSyncToggleController.php

@@ -38,6 +38,7 @@ class BusProNetSyncToggleController extends AbstractController
 
         return new HxRedirectResponse($this->generateUrl('app_administrative_assignment_detail', [
             'uuid' => $disposition->getAssignment()->getUuid(),
+            'r' => $request->query->get('r'),
         ]));
     }
 }