hide clients again after show in idler if clients are on hidden desk

clients need initial show to correctly handle mirror visibility but should
then be hidden again

ref 0ee8cc896e
fix T6024

src/bin/e_client.c

@@ -2545,6 +2545,8 @@ e_client_idler_before(void)
              evas_object_show(ec->frame);
              ec->changes.visible = !evas_object_visible_get(ec->frame);
              if (ec->changes.visible) EC_CHANGED(ec);
+             if (!e_client_util_desk_visible(ec, e_desk_current_get(ec->zone)))
+               evas_object_hide(ec->frame);
           }
      }
 }