This makes use of the NavigationAPITracker to correctly complete the Navigation::Result when events happen.
Pull request: https://github.com/WebKit/WebKit/pull/27084
<rdar://problem/126621897>
Committed 277688@main (a09b94a65009): <https://commits.webkit.org/277688@main> Reviewed commits have been landed. Closing PR #27084 and removing active labels.