Don't call MRMediaRemoteSetNowPlayingApplicationPlaybackStateForOrigin on macOS
<rdar://problem/48696893>
Created attachment 366742 [details] Patch
Created attachment 366830 [details] Patch
Created attachment 366832 [details] Patch for landing
Checking via bug number / id '196597', it does not seem to have landed. :-(
https://github.com/WebKit/WebKit/blob/9a3fdcd1f92455bd11abf1160d4c973f872170a2/Source/WebCore/platform/audio/cocoa/MediaSessionManagerCocoa.mm#L389