Manage asynchronous SLO request on closed SSO session (SAML IDP)
We should send an SLO response when catching an SLO request for an already closed SSO session. This is done for SOAP, but not for HTTP-REDIRECT or HTTP-POST
We should send an SLO response when catching an SLO request for an already closed SSO session. This is done for SOAP, but not for HTTP-REDIRECT or HTTP-POST