Enable grouped notifications unconditionally (#31929)

app/javascript/mastodon/features/notifications_wrapper.jsx

@@ -1,13 +1,8 @@
-import Notifications from 'mastodon/features/notifications';
 import Notifications_v2 from 'mastodon/features/notifications_v2';
-import { selectUseGroupedNotifications } from 'mastodon/selectors/settings';
-import { useAppSelector } from 'mastodon/store';
 
 export const NotificationsWrapper = (props) => {
-  const optedInGroupedNotifications = useAppSelector(selectUseGroupedNotifications);
-
   return (
-    optedInGroupedNotifications ? <Notifications_v2 {...props} /> : <Notifications {...props} />
+    <Notifications_v2 {...props} />
   );
 };