The ruby UA stylesheet https://www.w3.org/TR/css-ruby-1/#default-ua-ruby has rt { line-height: 1; }
<rdar://problem/118982013>
Pull request: https://github.com/WebKit/WebKit/pull/21103
Committed 271340@main (ea5244ff065d): <https://commits.webkit.org/271340@main> Reviewed commits have been landed. Closing PR #21103 and removing active labels.