refactor: Remove promise.await from apps (#28612)

apps/meteor/app/apps/server/bridges/commands.ts

apps/meteor/app/apps/server/bridges/listeners.js

apps/meteor/app/apps/server/bridges/livechat.ts

apps/meteor/app/apps/server/bridges/rooms.ts

apps/meteor/app/apps/server/converters/departments.js

apps/meteor/app/apps/server/converters/messages.js

apps/meteor/app/apps/server/converters/rooms.js

apps/meteor/app/apps/server/converters/uploads.js

apps/meteor/app/apps/server/converters/visitors.js

.../meteor/app/lib/server/methods/getSlashCommandPreviews.ts

apps/meteor/app/utils/lib/slashCommand.ts

apps/meteor/ee/lib/misc/transformMappedData.js

apps/meteor/ee/server/apps/communication/uikit.ts

apps/meteor/tests/unit/app/apps/server/messages.tests.js

packages/core-typings/src/SlashCommands/index.ts