Video playback on Nintendo.com fails with "No supported media sources" error
<rdar://problem/110588102>
Pull request: https://github.com/WebKit/WebKit/pull/15711
Committed 265933@main (3a1caaa7c86f): <https://commits.webkit.org/265933@main> Reviewed commits have been landed. Closing PR #15711 and removing active labels.