chore: Add comment about deprecation

Co-authored-by: Côme Chilliet <91878298+come-nc@users.noreply.github.com>
Signed-off-by: Carl Schwan <carl@carlschwan.eu>

Author: CarlSchwan

apps/comments/lib/Listener/CommentsEventListener.php

@@ -40,6 +40,7 @@ public function handle(Event $event): void {
 			|| $event instanceof CommentUpdatedEvent
 			|| $event instanceof CommentDeletedEvent
 			|| $event instanceof BeforeCommentUpdatedEvent) {
+			// Dispatch the deprecated event name for backward compatibility
 			$this->eventDispatcher->dispatchTyped(new CommentsEvent($event->getEvent(), $event->getComment()));
 		}