Fix buggy assert in WebSWContextManagerConnection::updateAppInitiatedValue
<rdar://problem/104067420>
Pull request: https://github.com/WebKit/WebKit/pull/8447
Committed 258726@main (205fbbb4b2d6): <https://commits.webkit.org/258726@main> Reviewed commits have been landed. Closing PR #8447 and removing active labels.