This code was added 16 years ago in 24907@main. It was intended to fix an issue where reloading would create a history item for an <object> element that might not have loaded. Today, history items are not created upon reloading. With site isolation, we are not always able to check if a child frame has loaded, so we should just remove this code.
<rdar://problem/127621115>
Pull request: https://github.com/WebKit/WebKit/pull/28198
Committed 278433@main (1be8c36a062c): <https://commits.webkit.org/278433@main> Reviewed commits have been landed. Closing PR #28198 and removing active labels.