workaround qml import issue

Yuhang Zhao

2024-01-10 79b1f3110754f9c21af2d7dacbd07b1a9dbaf6ef

 examples/mainwindow/mainwindow.qrc

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