Fix 'unknown' media attachment type rendering (#32613)

app/javascript/mastodon/components/status.jsx

@@ -449,7 +449,7 @@ class Status extends ImmutablePureComponent {
     } else if (status.get('media_attachments').size > 0) {
       const language = status.getIn(['translation', 'language']) || status.get('language');
 
-      if (['image', 'gifv'].includes(status.getIn(['media_attachments', 0, 'type'])) || status.get('media_attachments').size > 1) {
+      if (['image', 'gifv', 'unknown'].includes(status.getIn(['media_attachments', 0, 'type'])) || status.get('media_attachments').size > 1) {
         media = (
           <Bundle fetchComponent={MediaGallery} loading={this.renderLoadingMediaGallery}>
             {Component => (