Update ScreenCaptureKit API used
<rdar://problem/110408877>
Pull request: https://github.com/WebKit/WebKit/pull/14748
Committed 264988@main (0b941e1c1cc8): <https://commits.webkit.org/264988@main> Reviewed commits have been landed. Closing PR #14748 and removing active labels.
Due to multiple build failures, Eric advised reverting for the time being.
Committed 264989@main (194d0ea149c7): <https://commits.webkit.org/264989@main> Reviewed commits have been landed. Closing PR #14781 and removing active labels.
Re-opening for pull request https://github.com/WebKit/WebKit/pull/15314
Committed 265722@main (7550c63a5a8b): <https://commits.webkit.org/265722@main> Reviewed commits have been landed. Closing PR #15314 and removing active labels.