Deprecation Warning when compiling against Qt 6.5.0

[imikejackson]

Qt-Advanced-Docking-System/src/FloatingDockContainer.cpp:1013:17: warning: 'setActiveWindow' is deprecated: Use QWidget::activateWindow() instead. [-Wdeprecated-declarations]
                QApplication::setActiveWindow(this);

I think this might be fixed by:

#if(QT_VERSION > QT_VERSION_CHECK(6, 4, 0))
    this->activateWindow();
#else
    QApplication::setActiveWindow(this);
#endif

[githubuser0xFFFF]

Fixed this in master