quickwindowagent: Remove const for HitTestVisible API.

Dylan Liu

2024-05-30 ef7c04cd9ac06b64c516db47bda6f4d9c12db3b9

 examples/mainwindow/mainwindow.qrc

@@ -1,5 +1,6 @@
<RCC>
    <qresource prefix="/">
        <file>dark-style.qss</file>
        <file>light-style.qss</file>
    </qresource>
</RCC>