[scroll-anchoring] Reenable scroll anchoring on some LayoutTests
<rdar://problem/116533047>
Pull request: https://github.com/WebKit/WebKit/pull/18706
Committed 272299@main (e8b2c8b9f620): <https://commits.webkit.org/272299@main> Reviewed commits have been landed. Closing PR #18706 and removing active labels.