I registered the shift key using hotkey manager, but it does not work.

I registered the shift key using hotkey manager, but it does not work.

if (hotKey.keyCode == KeyCode.shift) {
      await hotKeyManager.register(
        hotKey,
        keyDownHandler: keyDownHandler,
        keyUpHandler: keyUpHandler,
      );
    }

    handleHotKeyRegister(HotKey(
      KeyCode.shift,
      scope: HotKeyScope.inapp,
    ));