Setting video_codec: vp9 resulted in no audio/video being transmitted
in real calls (2026-07-28), despite server-side codec regression
fallback to VP8 appearing to work in LiveKit SFU logs. Root cause not
further isolated beyond this. Leaving video_codec unset (defaults to
vp8) with the same 1440p/60fps/bitrate bump confirmed working.
Sets higher default video quality ceiling (up to 1440p/60fps camera,
1440p/30fps screen share, VP9 preferred codec) via the media_quality
config block introduced in element-hq/element-call#3736. These are
seeded defaults users can still adjust in Settings, not hard limits.
Bumped embedded package to @sorb/threadnet-call-embedded.