Port the ScreenSaver interface from sync calls to powerdevil
If powerdevil doesn't respond, kwin_wayland can experience a hard freeze. This change ports the powerdevil inhibition part away from sync calls to async calls to prevent the hard freeze.
If powerdevil doesn't respond, kwin_wayland can experience a hard freeze. This change ports the powerdevil inhibition part away from sync calls to async calls to prevent the hard freeze.