Update pkg/utils/informer/informermanager.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: weng271190436

pkg/utils/informer/informermanager.go

@@ -207,8 +207,8 @@ func (s *informerManagerImpl) Stop() {
 
 func (s *informerManagerImpl) AddEventHandlerToInformer(resource schema.GroupVersionResource, handler cache.ResourceEventHandler) {
 	// Get or create the informer (this is idempotent - if it exists, we get the same instance)
-	// The idempotent behavior is important because it is called by both the change detector and informer populator,
-	// which run concurrently on the leader hub agent.
+	// The idempotent behavior is important because this method may be called multiple times,
+	// potentially concurrently, and relies on the shared informer instance from the factory.
 	informer := s.informerFactory.ForResource(resource).Informer()
 
 	// Add the event handler to the informer