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/components/keyring.js

@@ -216,7 +216,7 @@ class KeyringPrompter extends Gcr.SystemPrompter {
         if (!this._registered) {
             this.register(Gio.DBus.session);
             this._dbusId = Gio.DBus.session.own_name('org.gnome.keyring.SystemPrompter',
-                                                     Gio.BusNameOwnerFlags.ALLOW_REPLACEMENT, null, null);
+                Gio.BusNameOwnerFlags.ALLOW_REPLACEMENT, null, null);
             this._registered = true;
         }
         this._enabled = true;