Expose WKBackForwardListItem._wasCreatedByJSWithoutUserInteraction as SPI. We use this flag internally to determine whether or not we should skip a particular back/forward list item when navigating back / forward.
<rdar://problem/109366865>
Pull request: https://github.com/WebKit/WebKit/pull/13890
Committed 264082@main (168fc8d9d4cf): <https://commits.webkit.org/264082@main> Reviewed commits have been landed. Closing PR #13890 and removing active labels.