If one component of the list fails we should not immediately fail the parsing of font src, since one valid component will validate the descriptor. Example: https://github.com/web-platform-tests/wpt/blob/e9470cde64/css/css-fonts/parsing/font-face-src-list.html "A component with a parse error does not invalidate the entire descriptor if there's some other valid component present."
<rdar://problem/104039050>
Pull request: https://github.com/WebKit/WebKit/pull/8409
Committed 258749@main (6782d34ec7c6): <https://commits.webkit.org/258749@main> Reviewed commits have been landed. Closing PR #8409 and removing active labels.