refactor: make sure promises are settled before app shutdown (#12942)

👍

packages/backend/src/core/NoteCreateService.ts

@@ -58,6 +58,7 @@ import { FanoutTimelineService } from '@/core/FanoutTimelineService.js';
 import { UtilityService } from '@/core/UtilityService.js';
 import { UserBlockingService } from '@/core/UserBlockingService.js';
 import { isReply } from '@/misc/is-reply.js';
+import { trackPromise } from '@/misc/promise-tracker.js';
 
 type NotificationType = 'reply' | 'renote' | 'quote' | 'mention';
 
@@ -676,7 +677,7 @@ export class NoteCreateService implements OnApplicationShutdown {
 						this.relayService.deliverToRelays(user, noteActivity);
 					}
 
-					dm.execute();
+					trackPromise(dm.execute());
 				})();
 			}
 			//#endregion