Move WebRTC H265 flag from experimental to internal
Pull request: https://github.com/WebKit/WebKit/pull/2117
Committed 252203@main (78bfb4f405f5): <https://commits.webkit.org/252203@main> Reviewed commits have been landed. Closing PR #2117 and removing active labels.
<rdar://problem/96577915>
Reverted by https://github.com/WebKit/WebKit/pull/2211
Broke imported/w3c/web-platform-tests/media-capabilities/decodingInfo.webrtc.html
Committed 252258@main (e6eee2e3820d): <https://commits.webkit.org/252258@main> Reviewed commits have been landed. Closing PR #2211 and removing active labels.