See https://drafts.csswg.org/css-color-adjust/#color-scheme-prop
<rdar://problem/94615599>
Pull request: https://github.com/WebKit/WebKit/pull/17515
Committed 267750@main (8d8787bcabc2): <https://commits.webkit.org/267750@main> Reviewed commits have been landed. Closing PR #17515 and removing active labels.