Log Message:
qt6ct: update to 0.10 (switching to maintained fork)

# changes
* Remove .desktop suffix when calling setDesktopFileName
* Allow to override Qt plugin directory with cmake
* Support cmake build without QtWidgets
* Support runtime settings update without QtWidgets
* Don't save style name for regular font
* Don't rely on label font for saving font settings
* Fix initial fonts
* Use QWindowSystemInterface::handleThemeChange
* Add KDE theming support