Ignore history items added by JS without user interaction via fragment navigation when navigation back/forward via the WKWebView API.
<rdar://95790598>
Pull request: https://github.com/WebKit/WebKit/pull/1734
Committed 251900@main (2c5890a4f836): <https://commits.webkit.org/251900@main> Reviewed commits have been landed. Closing PR #1734 and removing active labels.