cleanup: Use consistent 4-space indent

This is another bit where we've made good progress, and just need
a final push to complete the transition.

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

js/ui/closeDialog.js

@@ -131,7 +131,7 @@ export const CloseDialog = GObject.registerClass({
 
         if (shouldTrack) {
             Main.layoutManager.trackChrome(this._dialog,
-                                           {affectsInputRegion: true});
+                {affectsInputRegion: true});
         } else {
             Main.layoutManager.untrackChrome(this._dialog);
         }