macOS: Frame rates are not applied

    QCamera c;
    c.load();
    QObject::connect(&c,&QCamera::stateChanged,[&](QCamera::State s) {
        if (s==QCamera::ActiveState)
            qDebug() << ":="<<c.viewfinderSettings().maximumFrameRate()<<":"<<c.viewfinderSettings().minimumFrameRate();
    });

    QCameraViewfinderSettings sss = c.supportedViewfinderSettings()[0];
    auto ss = c.viewfinderSettings();
    qDebug() << ss.maximumFrameRate()<<":"<<ss.minimumFrameRate();

    c.setViewfinderSettings(sss);
    ss = c.viewfinderSettings();
    qDebug() << ss.maximumFrameRate()<<":"<<ss.minimumFrameRate();

    c.start();