cleanup: Remove spaces in object literals

We only adopted this style relatively recently, so there's a bit
more to adjust. Still, it's manageable and another step towards
getting rid of the legacy style.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2866>

js/ui/appMenu.js

@@ -157,7 +157,7 @@ export class AppMenu extends PopupMenu.PopupMenu {
         if (!canFavorite)
             return;
 
-        const { id } = this._app;
+        const {id} = this._app;
         this._toggleFavoriteItem.label.text = this._appFavorites.isFavorite(id)
             ? _('Unpin')
             : _('Pin to Dash');