[Cocoa] Feature application code is working around Core Text deficiencies that don't exist any more
<rdar://problem/105377912>
Pull request: https://github.com/WebKit/WebKit/pull/10013
Committed 260245@main (fffd79dee910): <https://commits.webkit.org/260245@main> Reviewed commits have been landed. Closing PR #10013 and removing active labels.