Draft: Replaced Qt6 deprecated QMetaType::Type with QVariant::Type
Fixes compiling code that defines QT_DISABLE_DEPRECATED_BEFORE=0x60000
This likely is not good way to solve this just wanted to bring it up. This is a quick hack.
Replacing QVariant::Type with QMetaType::Type doesn't work (apart that it breaks API) as QVariant(QMetaType::Type) is deleted in Qt6:
// QVariant::Type is marked as \obsolete, but we don't want to
// provide a constructor from its intended replacement,
// QMetaType::Type, instead, because the idea behind these
// constructors is flawed in the first place. But we also don't
// want QVariant(QMetaType::String) to compile and falsely be an
// int variant, so delete this constructor:
QVariant(QMetaType::Type) = delete;
QVariant(QVariant::Type) is called at least here in kservicetype.cpp: