[logout-greeter] Set window class name
This matches what kwin's effects have always been searching for. It only used to appear to work as "ksmserver ksmserver" was also checked in previous kwin versions. When that was fixed we exposed this bug.
This matches what kwin's effects have always been searching for. It only used to appear to work as "ksmserver ksmserver" was also checked in previous kwin versions. When that was fixed we exposed this bug.