[Cocoa] AVContentKey -revoke and -externalContentProtectionStatus have correctness issues when using AVContentKeySession in legacy WebKit compatibility mode
<rdar://problem/118201899>
Pull request: https://github.com/WebKit/WebKit/pull/20265
Committed 270554@main (2175754e2586): <https://commits.webkit.org/270554@main> Reviewed commits have been landed. Closing PR #20265 and removing active labels.