Port away from KStatefulBrush::brush(const QWidget*)

Soon to be deprecated, use the QPalette overload instead.
2 jobs for master in 29 minutes and 6 seconds (queued for 115 minutes and 55 seconds)
Status Name Job ID Coverage
  Build
passed build_clazy_clang_tidy #113935

00:21:22

passed linux kf5-qt5 qt5.15 #113934

00:07:43

26.0%