[scroll-anchoring] Reenable scroll anchoring on more LayoutTests
<rdar://problem/119688035>
Pull request: https://github.com/WebKit/WebKit/pull/21830
Committed 272381@main (17faf7b3085a): <https://commits.webkit.org/272381@main> Reviewed commits have been landed. Closing PR #21830 and removing active labels.