There are some WPT tests where the output only shows one failure. Easy to restructure them so you can see all the failures. Also, some are incorrectly expecting that "initial" for a longhand will still serialize the longhand, but in that case the longhand should serialize as empty string. Dealing with both those issues.
Pull request: https://github.com/WebKit/WebKit/pull/7201
<rdar://problem/103026393>
Committed 257438@main (e18f26fb8c87): <https://commits.webkit.org/257438@main> Reviewed commits have been landed. Closing PR #7201 and removing active labels.