fix(login): treat already-logged-out as success in backchannel logout (#1430)#1431

julien-nc merged 2 commits intonextcloud:mainnextcloud/user_oidc:mainfrom

SAY-5:fix/backchannel-logout-already-logged-out-1430SAY-5/user_oidc:fix/backchannel-logout-already-logged-out-1430Copy head branch name to clipboard