[PATCH 0/2] MR8402: mf/session: Use a dedicated state when source is shutdown.

[Rémi Bernon]

This should fix some spurious test failure in `test_media_session_Close`, as sometimes the source shutdown happens quickly enough and changes the session state to SESSION_STATE_STOPPED, causing the later Close command to succeed when it consistently returns E_SHUTDOWN on Windows.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/8402