Fix CARenderServer sandbox violation under WebPage::platformInitialize on macOS.
<rdar://problem/128983768>
Pull request: https://github.com/WebKit/WebKit/pull/29284
Committed 279511@main (e42a325eda4c): <https://commits.webkit.org/279511@main> Reviewed commits have been landed. Closing PR #29284 and removing active labels.