Bug 1818735 [wpt PR 38697] - Remove obsolete stats from validateStatsReport() and...

Bug 1818735 [wpt PR 38697] - Remove obsolete stats from validateStatsReport() and reset WPTs., a=testonly

Automatic update from web-platform-tests
Remove obsolete stats from validateStatsReport() and reset WPTs.

Fix validateStatsReport() not to reference obsolete stuff, including
"track", "stream", "sender", "receiver" and "transceiver".

Other WPT fixes:
- Include "inbound-rtp.trackIdentifier".
- Make "remoteId" optional because it only exists after RTCP which is
  not guaranteed for most uses of validateStatsReport().
- Make RTCRtpParameters-transactionId-expected.txt same every run.
- Do what [1] does but for the RTCRtpReceiver test.
- Reset existing WPTs and re-enable tests that were "temporarily"
  disabled and then forgotten about.

[1] https://chromium-review.googlesource.com/c/chromium/src/+/4291188

Bug: 1374215
Change-Id: If677c066b5ea9d5387b941935dc997307c15aa70
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4288828
Commit-Queue: Philipp Hancke <phancke@microsoft.com>
Reviewed-by: Philipp Hancke <phancke@microsoft.com>
Commit-Queue: Henrik Boström <hbos@chromium.org>
Auto-Submit: Henrik Boström <hbos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1109554}

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wpt-commits: 027b376acf17807490a99c6e352fc3dbd60c6d7e
wpt-pr: 38697