* rtc: log the attributes of every data channel
Both transports log "data channel open" at info with the channel's
label, id, ordered, maxRetransmits, maxPacketLifeTime, protocol and
negotiated, through one helper.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
* paul feedback
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>