Navigating a cross-origin iframe to the same URL should not replace the current HistoryItem. This aligns our behavior with Blink and Gecko.
Pull request: https://github.com/WebKit/WebKit/pull/4401
Committed 254563@main (778e351efb2f): <https://commits.webkit.org/254563@main> Reviewed commits have been landed. Closing PR #4401 and removing active labels.
<rdar://problem/100034095>