The QTextFormat::FontLetterSpacingType property was added outside
the span of the FirstFontProperty and LastFontProperty, so
the fontDirty flag would not be set when it was changed. There is
no binary compatible way to fix this before Qt 6, so for now, we
add a special case for it.
[ChangeLog][QtGui][Text] Fixed an issue where changing the letter
spacing type of a QTextCharFormat would not cause its font to
update.
Task-number: QTBUG-65345
Change-Id: I5ab53d7f82d529b57edceacfc3fa688c6741cd17
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: C. Boemann <cbo@boemann.dk>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
67b1fa48be