add more const

Yuhang Zhao

2023-12-06 f041cd599f2ba58906958f6886b9cd25e180d0af

 src/quick/quickwindowagent_p.h

@@ -15,7 +15,7 @@
        void init();

        // Host
        QQuickWindow *host{};
        QQuickWindow *hostWindow{};
    };

}