We are failing some WPT tests for this property in certain scenarios such as when we are not returning the shortest representation for the property value. We can reuse the logic that is in ShorthandSerializer instead of duplicating the logic
<rdar://problem/115521440>
Pull request: https://github.com/WebKit/WebKit/pull/17795
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/42070
Committed 268167@main (ad8e8db1b46b): <https://commits.webkit.org/268167@main> Reviewed commits have been landed. Closing PR #17795 and removing active labels.