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/status/remoteAccess.js

@@ -66,7 +66,7 @@ class RemoteAccessApplet extends SystemIndicator {
 });
 
 export const ScreenRecordingIndicator = GObject.registerClass({
-    Signals: { 'menu-set': {} },
+    Signals: {'menu-set': {}},
 }, class ScreenRecordingIndicator extends PanelMenu.ButtonBox {
     _init() {
         super._init({