FC_QT defaulting to Qt5
FC_QT macro in qt.m4 defaults to Qt5, while we're supposed to have Qt6 as the default. Not causing user-facing issues at the moment, as all the users state the Qt version explicitly.
FC_QT macro in qt.m4 defaults to Qt5, while we're supposed to have Qt6 as the default. Not causing user-facing issues at the moment, as all the users state the Qt version explicitly.