AudioScheduledSourceNode::m_playbackState is accessed from several threads without synchronization.
Pull request: https://github.com/WebKit/WebKit/pull/11510
Committed 261693@main (b0b96aa8e1b2): <https://commits.webkit.org/261693@main> Reviewed commits have been landed. Closing PR #11510 and removing active labels.
<rdar://problem/106758002>