update demo code

Zhao Yuhang

2024-09-15 f645ae48cda10b80ffe9d83ba9487671c7f535c0

 src/core/windowitemdelegate.cpp

@@ -17,7 +17,7 @@
    WinIdChangeEventFilter *
        WindowItemDelegate::createWinIdEventFilter(QObject *host,
                                                   AbstractWindowContext *context) const {
        return new WindowWinIdChangeEventFilter(host, context);
        return new WindowWinIdChangeEventFilter(static_cast<QWindow *>(host), context);
    }

}