Sync interfaces/ with @webref/idl 3.47.3

[github-actions]

This automated pull request updates interfaces/*.idl from @webref/idl 3.47.3.

Before merging, please check that any tests that depend on the updated IDL files still work. In particular, check for gray boxes as the wpt.fyi check status, which usually means that some tests have regressed.

If additional changes are needed, please manually create another PR based on this one.

See the workflow for how this pull request was created, and the README for how the IDL files in this directory are used.

[rakuco]

@foolip just wondering if there's anything blocking merging this PR

[foolip]

@rakuco sure thing, anyone can review and merge these PRs, but I understand it's mysterious what should be checked. What I do is:

• Read through the diff to see if anything is obviously broken. It really never is because of the validation that happens before the webref release.
• Look through the before/after results from wpt.fyi checks for each browser, in this case Chrome, Firefox and Safari. Only the checks that have an inconclusive result (gray square) can have regressions
• Look at any regressions, in this case https://wpt.fyi/results/webrtc-stats/supported-stats.https.html?diff&filter=ADC&run_id=5078749754425344&run_id=5115790424801280
• Fix any regressions that are caused by the IDL changes

In this case there's a timeout, and I actually don't know what might cause that. Probably not the IDL changes however, so the first thing I'd try is closing and reopening the PR to rerun CI. If that fixes it I'll assume unrelated flakiness and merge.

[rakuco]

Thanks, @foolip, this is the information I'd been looking for! The webrtc timeout seems to be gone on Safari, so I guess we're good to go?

[foolip]

@rakuco, yep, good to go!