The named logout HttpClient's primary handler disables auto-redirect, so a 3xx from MAS is a
non-delivery retried like any non-2xx instead of being followed to a final 2xx that revokes.
Pinned through the real DI registration against a real loopback listener answering 302, and
the registered client's Timeout is pinned to exactly 10 s. The unexpected-exception test is
replaced by the isolation test (its fix is the next commit) and the cancellation test stands alone.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ec66fba5ca