Fix css/css-typed-om/stylevalue-serialization/cssTransformValue.tentative.html WPT test to match the specification.
Pull request: https://github.com/WebKit/WebKit/pull/7564
Committed 257839@main (11f8b47f5d1c): <https://commits.webkit.org/257839@main> Reviewed commits have been landed. Closing PR #7564 and removing active labels.
<rdar://problem/103342932>