cleanup: Use deepUnpack() intead of deep_unpack()

deep_unpack() is just a backwards compability alias for deepUnpack()[1].
The new name makes it more clear that this is not a C function, start to
use it.

[1] 13e662a29d

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2416>

js/ui/accessDialog.js

@@ -28,7 +28,7 @@ class AccessDialog extends ModalDialog.ModalDialog {
         this._request = Gio.DBusExportedObject.wrapJSObject(RequestIface, this);
 
         for (let option in options)
-            options[option] = options[option].deep_unpack();
+            options[option] = options[option].deepUnpack();
 
         this._buildLayout(title, description, body, options);
     }