Rewrite actions/app.ts and reducers/missed_updates.ts with createAction (#24801)

app/javascript/mastodon/features/ui/index.jsx

@@ -362,7 +362,7 @@ class UI extends React.PureComponent {
 
     if (layout !== this.props.layout) {
       this.handleLayoutChange.cancel();
-      this.props.dispatch(changeLayout(layout));
+      this.props.dispatch(changeLayout({ layout }));
     } else {
       this.handleLayoutChange();
     }