[WASM] QWebSocket does not emit QWebSocket::binaryFrameReceived(), can freeze GUI

// Server
int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);

    const int sz_megabytes = 200;
    const int sz_bytes = sz_megabytes * 1024 * 1024;
    const int listSize = sz_bytes / sizeof(quint64);

    QList<quint64> numbers;
    numbers.reserve(listSize);
    for (quint64 i = 0; i < listSize; ++i)
        numbers << i;

    const QByteArray bytes(reinterpret_cast<const char*>(numbers.constData()), sz_bytes);

    QWebSocketServer server(u"Big Binary Server"_s, QWebSocketServer::NonSecureMode);
    QObject::connect(&server, &QWebSocketServer::newConnection, &app, [&]{
        auto client = server.nextPendingConnection();
        if (!client)
            return;

        qDebug() << "Sending big payload to" << client;
        auto bytesSent = client->sendBinaryMessage(bytes);
        qDebug() << "Sent" << bytesSent << "bytes";
    });
    server.listen(QHostAddress::LocalHost, 54321);

    return app.exec();
}

// Client
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    auto bar = new QProgressBar;
    bar->setMinimum(0);
    bar->setMaximum(100);
    bar->show();

    QPropertyAnimation anim(bar, "value");
    anim.setStartValue(0);
    anim.setEndValue(100);
    anim.setDuration(1000);
    anim.setLoopCount(-1);
    anim.start();

    auto log = new QPlainTextEdit;

    QWidget window;
    auto layout = new QVBoxLayout(&window);
    layout->addWidget(bar);
    layout->addWidget(log);
    window.resize(800, 600);
    window.show();

    QWebSocket socket("test.localhost");
    QObject::connect(&socket, &QWebSocket::binaryFrameReceived, &app, [&](const QByteArray &frame, bool isLastFrame){
        log->appendPlainText(u"Received frame, size = %1 Last frame?: "_s.arg(frame.size()) + (isLastFrame ? "Yes" : "No"));
    });
    QObject::connect(&socket, &QWebSocket::binaryMessageReceived, &app, [&](const QByteArray &message){
        log->appendPlainText(u"Received message, size = %1"_s.arg(message.size()));
    });
    QTimer::singleShot(2000, &app, [&]{
        QUrl url("ws://localhost:54321");
        log->appendPlainText(u"Connecting to %1"_s.arg(url.toString()));
        socket.open(url);
    });

    return app.exec();
}