The widget intent presets default sendNotificationType to "notification",
and the URL param could only switch it to ring/notification, so the host
had no way to say "don't notify". In persistent voice channels and space
rooms that notification carries an @room mention: every member got a
highlighted ping (and phone push) whenever a moderator joined first, and
other clients showed it as a missed call.
`sendNotificationType=none` now clears it after the presets are applied.
Unit test added.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5