refactor: Move callbacks to async (#29051)

apps/meteor/.mocharc.js

apps/meteor/app/authentication/server/startup/index.js

...eor/app/channel-settings/server/functions/saveRoomName.js

...or/app/channel-settings/server/functions/saveRoomTopic.ts

.../meteor/app/cloud/server/functions/getWorkspaceLicense.ts

...meteor/app/cloud/server/functions/saveRegistrationData.js

apps/meteor/app/custom-oauth/server/custom_oauth_server.js

apps/meteor/app/lib/client/methods/sendMessage.ts

...teor/app/lib/server/functions/addUserToDefaultChannels.ts

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

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

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

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

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

apps/meteor/app/lib/server/functions/notifications/email.js

apps/meteor/app/lib/server/functions/notifications/index.ts

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

apps/meteor/app/lib/server/functions/saveUser.js

apps/meteor/app/lib/server/functions/sendMessage.js

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