Color of the 'update available' UrlLabel is wrong on dark stylesheets

[PaddleStroke]

Color of the 'update available' UrlLabel is wrong on dark stylesheets

[PaddleStroke]

Potentially found the reason by chance :

void Application::setStyleSheet(const QString& qssFile, bool tiledBackground)
{
    Gui::MainWindow* mw = getMainWindow();
    auto mdi = mw->findChild<QMdiArea*>();
    mdi->setProperty("showImage", tiledBackground);

    // Qt's style sheet doesn't support it to define the link color of a QLabel
    // or in the property editor when an expression is set because therefore the
    // link color of the application's palette is used.
    // A workaround is to set a user-defined property to e.g. a QLabel and then
    // define it in the .qss file.
    //
    // Example:
    // QLabel label;
    // label.setProperty("haslink", QByteArray("true"));
    // label.show();
    // QColor link = label.palette().color(QPalette::Text);
    //
    // The .qss file must define it with:
    // QLabel[haslink="true"] {
    //     color: #rrggbb;
    // }
    //
    // See https://stackoverflow.com/questions/5497799/how-do-i-customise-the-appearance-of-links-in-qlabels-using-style-sheets
    // and https://forum.freecad.org/viewtopic.php?f=34&t=50744