馃崚 x11locker: lower m_background when hiding
X11Locker::m_background window was for some reason stacked above the lockscreen, even though it did't had focus. Bug seems to be introduced by Qt6.
(cherry picked from commit 2d258e6c)
02f5059c x11locker: lower m_bacckground when hiding
Co-authored-by: Philip M眉ller philm@manjaro.org