Which causes e.g. properties to be put right on ProxyObject's structure.
<rdar://problem/108750872>
Pull request: https://github.com/WebKit/WebKit/pull/13336
Committed 263559@main (39476b8c83f0): <https://commits.webkit.org/263559@main> Reviewed commits have been landed. Closing PR #13336 and removing active labels.
Re-opening for pull request https://github.com/apple/WebKit/pull/601