Introduce StructuredSerializeInternal forStorage parameter
<rdar://problem/101367447>
Pull request: https://github.com/WebKit/WebKit/pull/5576
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/36567
Committed 255788@main (664fe9493a72): <https://commits.webkit.org/255788@main> Reviewed commits have been landed. Closing PR #5576 and removing active labels.