To support Scroll-driven Animations, the CSS Animations spec has been updated to allow "auto" as a valid value for the "animation-duration" property.
<rdar://problem/135798959>
Pull request: https://github.com/WebKit/WebKit/pull/33466
Committed 283499@main (a403c9cb7f54): <https://commits.webkit.org/283499@main> Reviewed commits have been landed. Closing PR #33466 and removing active labels.