window.matchMedia(" all") fails to parse.
rdar://104104606
Pull request: https://github.com/WebKit/WebKit/pull/9102
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/38169
Committed 259357@main (738835521b50): <https://commits.webkit.org/259357@main> Reviewed commits have been landed. Closing PR #9102 and removing active labels.