[MediaSource] canplay event does not fire when source buffer's first sample has a presentation time greater than 0
<rdar://problem/105169372>
Pull request: https://github.com/WebKit/WebKit/pull/19312
Committed 269689@main (d0b6e889f00e): <https://commits.webkit.org/269689@main> Reviewed commits have been landed. Closing PR #19312 and removing active labels.
Not to nag, but would it be possible to add web platform tests for these kinds of bugs in the future? It would really help us on the Firefox team to confirm whether we have interop. If it's currently impractical, I'd love to help find out what's missing in the WPT infrastructure to make it possible/easier!