SSO fails initial logon after logout or expired token

If you're logged in with this component then logout, the subsequent login fails. This could be related to the way SSO interacts with site minder for authentication and, in general, how a authentication federation service works. To logout, we need to call back to site minders logout to ensure all sessions are expired.

Start by tracing the iOS component's logout and subsequent initial-login flow, then review how SiteMinder and the authentication federation service handle expired sessions or tokens. The logout path should call SiteMinder logout so all sessions expire, and a login after logout or token expiry should succeed.

Written by the indexing model from the issue text.