(Alpha) Test broken - WebM with AV1 support

[Djfe]

The code submitted here appears to be broken:
8b7ae12

I can play files listed here just fine in Firefox on Android.
https://test-videos.co.uk/bigbuckbunny/webm-av1

They just added AV1 HW Decoding support with Firefox 113 to Android.
https://alpha.html5test.com/ shows a red X even though it's supported.

While you are at it, you might also add MP4 with AV1 support to the list :)
https://test-videos.co.uk/sintel/mp4-av1

[niutech]

This has been fixed in my HTML5Test fork.