PipeWire server in older versions would mark the negotiation as
finished and start creating buffers.
Upstream bug: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/1732
Bug: webrtc:13429
Change-Id: I7194e6672716d7fef1c2aadc40d3acf55cb282a2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/262621
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Cr-Commit-Position: refs/heads/main@{#36901}