WebRTC remote video codec factories should check video format strings in a case insensitive way
<rdar://114839348>
Pull request: https://github.com/WebKit/WebKit/pull/17401
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/41793
Committed 267637@main (758b9fa876ab): <https://commits.webkit.org/267637@main> Reviewed commits have been landed. Closing PR #17401 and removing active labels.