for some reason KSMShutdownFeedback::stop() was not doing anything when the
KWin effect was taking care of the logout effect but KWin also does not
apply the effect to windows other than the one created by ksmserver
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
the effect is very much bound to the window manager (KWin) because if
applications require attention (such as confirmation to cancel any
pending changes) their window or any dialog they pop may have to be
raised, will have to be focused and not be grayed out
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>