Porting the Fonts KCM to QML in 24b960f92284 set the state of the font
preview labels to `disabled`, resulting in a light gray text with too
little contrast to enable a usable preview of the chosen font.
In the `QWidgets` based KCM the following code was used:
QLabel::setFrameStyle(QFrame::StyledPanel | QFrame::Sunken)
As that property is not available from QML, we reset the text colour to
solve the problem. It's still not using the proper frame colour, though,we use an alternative
but that does not seem like too much of an issue.
Alternatively we could use a `Frame` and a `Label`,approach by setting the state to `readOnly`. but this approachTo also indicate
has even more problems, e.g.visually that nothing can be typed into the textedit, the frame does not respect the roundedwe add
border mandated by Breeze, and the horizontal alignment of each row`Kirigami.Theme.inherit: true` which results in changing the
would need to be adaptedbackground from white to grey.