Make hit-test items auto-delete

Sine Striker

2024-07-28 e9d163b1a811ee4f02e898bc7c2e6336d88e4a7f

 examples/mainwindow/mainwindow.qrc

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