refactor: deleteRoom to async (#28786)

apps/meteor/app/federation/server/endpoints/dispatch.js

apps/meteor/app/federation/server/hooks/afterCreateRoom.js

apps/meteor/app/integrations/server/lib/triggerHandler.js

apps/meteor/app/lib/server/functions/deleteRoom.ts

apps/meteor/app/lib/server/functions/setUserAvatar.ts

apps/meteor/app/lib/server/lib/interceptDirectReplyEmails.js

apps/meteor/app/notifications/server/lib/Notifications.ts

apps/meteor/app/slackbridge/server/SlackAdapter.js

apps/meteor/server/methods/eraseRoom.ts