js: Split gi imports to be on new lines to prepare for ES modules

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2794>

js/ui/userWidget.js

@@ -3,7 +3,10 @@
 // A widget showing the user avatar and name
 /* exported UserWidget */
 
-const { Clutter, GLib, GObject, St } = imports.gi;
+const Clutter = imports.gi.Clutter;
+const GLib = imports.gi.GLib;
+const GObject = imports.gi.GObject;
+const St = imports.gi.St;
 
 const Params = imports.misc.params;