Extend the GPU process sandbox for microphone capture
<rdar://problem/245498>
Pull request: https://github.com/WebKit/WebKit/pull/4578
<rdar://94265553>
Committed 254740@main (81eb991e9c7d): <https://commits.webkit.org/254740@main> Reviewed commits have been landed. Closing PR #4578 and removing active labels.