Re-import css-counter-styles/counter-style-at-rule WPT (37ffe7edc5b6400a16ba6511ba2fd392ab8be31)
<rdar://problem/105827626>
Pull request: https://github.com/WebKit/WebKit/pull/10573
Committed 260959@main (7a0254637c1a): <https://commits.webkit.org/260959@main> Reviewed commits have been landed. Closing PR #10573 and removing active labels.