Refactor alerts to TypeScript, remove react-notification dependency (#34239)

app/javascript/mastodon/features/standalone/compose/index.jsx

@@ -1,12 +1,12 @@
+import { AlertsController } from 'mastodon/components/alerts_controller';
 import ComposeFormContainer from 'mastodon/features/compose/containers/compose_form_container';
 import LoadingBarContainer from 'mastodon/features/ui/containers/loading_bar_container';
 import ModalContainer from 'mastodon/features/ui/containers/modal_container';
-import NotificationsContainer from 'mastodon/features/ui/containers/notifications_container';
 
 const Compose = () => (
   <>
     <ComposeFormContainer autoFocus withoutNavigation />
-    <NotificationsContainer />
+    <AlertsController />
     <ModalContainer />
     <LoadingBarContainer className='loading-bar' />
   </>