translateX(1em) is not computationally independent.
rdar://104553316
Pull request: https://github.com/WebKit/WebKit/pull/9095
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/38162
Committed 259353@main (ba49d5d8bb0b): <https://commits.webkit.org/259353@main> Reviewed commits have been landed. Closing PR #9095 and removing active labels.