Ensure session lifetime coordination is invoked when a session expires

[bhazen]

What issue does this PR address?
Scenarios can exist where session lifetime coordination is enabled but a session is expired and removed prior to the cleanup job running and processing that expiration. These changes account for that scenario and implement a workaround to detect when the dotnet cookie handler removes a session and triggers the session coordination service's processing of an expired session to ensure things such as backchannel logout and removal of grants.

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