disable mobile

com.unity.uiwidgets/Runtime/engine/UIWidgetsPanelWrapper.cs

 
         public void OnKeyDown(Event e) {
             int modifier = 0;
+#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX || UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN
+#endif
             UIWidgetsPanel_onKey(ptr: _ptr, keyCode: e.keyCode, e.type == EventType.KeyDown, modifier);
             if (e.character != 0 || e.keyCode == KeyCode.Backspace) {
                 PointerEventConverter.KeyEvent.Enqueue(new Event(other: e));

com.unity.uiwidgets/Runtime/gestures/converter.cs

                                     keyBoardEvent.type = EventType.KeyUp;
                                 }
                                 keyBoardEvent.keyCode = (KeyCode)datum.buttons;
+#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX || UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN
-
+#endif
                                 RawKeyboard.instance._handleKeyEvent(keyBoardEvent);
                                 TextInput.OnGUI();
                             }