add empty qml demo

Yuhang Zhao

2023-12-11 e9ce49b601b412050e9709a3474e51950dccd5a9

 src/core/windowitemdelegate.cpp

@@ -6,8 +6,6 @@

    WindowItemDelegate::~WindowItemDelegate() = default;

    bool WindowItemDelegate::resetQtGrabbedControl() const {
        return true;
    }
    void WindowItemDelegate::resetQtGrabbedControl() const {}

}