Fix fullscreen button.

native/nativeshell.js

@@ -10,6 +10,7 @@ const features = [
     "clientsettings",
     "multiserver",
     "remotecontrol",
+    "fullscreenchange",
 ];
 
 const plugins = [
@@ -258,4 +259,4 @@ async function showSettingsModal() {
         modalContainer.remove();
     });
     closeContainer.appendChild(close);
-}
+}