Commit 0b882f3 synthesized an Event::EndFile(Error) whenever
event_context.wait_event returned libmpv2::Error::Raw and forwarded it
to the web layer. MPV is fully able to continue playback after such
transient errors (its demuxer cache is intact), so fabricating an
end-of-file caused long-running HTTP streams (e.g. RealDebrid) to flip
to a blocking "Loading failed" overlay mid-playback. Revert that branch
to the prior log-and-continue behavior.
Also downgrade PlayerEnded errors from critical:true to critical:false
so genuine mpv_end_file_reason::Error surfaces as a 3s toast in
stremio-web (Player.js), letting the user retry, instead of an
unrecoverable full-screen overlay.
