Unsolved Qt6: create QVariant with specific QMetaType

[voltron]

I'm porting an app from Qt5 to Qt6. This app heavily uses QVariants and one of the use-cases is creating invalid QVariant with the specific QVariant::Type, for example

return QVariant( QVariant::Double );

In Qt6 QVariant::Type was replaced with QMetaType::Type, but when I make corresponding changes in the code

return QVariant( QMetaType::Double );

I get following error

error: use of deleted function ‘QVariant::QVariant(QMetaType::Type)’

According to the docs such constructor still exists, so I'm a bit lost what is wrong and how to fix this error.