When a user does a manual navigation (e.g. navigating via the location bar), and the page has an openee, it should be safe to sever the opener link and allow a process swap when navigating cross-origin.
<rdar://problem/122506395>
Pull request: https://github.com/WebKit/WebKit/pull/25253
Committed 275565@main (7c33c64d1ef5): <https://commits.webkit.org/275565@main> Reviewed commits have been landed. Closing PR #25253 and removing active labels.