Reset UserMediaPermissionRequestManagerProxy granted/denied requests in case of a related permission change
<rdar://problem/111837120>
Pull request: https://github.com/WebKit/WebKit/pull/15591
Committed 265806@main (e698fda41502): <https://commits.webkit.org/265806@main> Reviewed commits have been landed. Closing PR #15591 and removing active labels.