Import wpt@3250c87c4e2f8a2f01aec048a0470bd161a2e084

https://github.com/web-platform-tests/wpt/compare/3aee62508...3250c87c4

Using wpt-import in Chromium 198ed0c87cad8dd9d05020f1f0bf60c476ec4584.
With Chromium commits locally applied on WPT:
  dab7ed4178 "NavigateEvent.formData should include the submitter [...]

Note to gardeners: This CL imports external tests and adds expectations
for those tests; if this CL is large and causes a few new failures,
please fix the failures by adding new lines to TestExpectations rather
than reverting. See:
https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md

Directory owners for changes in this CL:
foolip@chromium.org:
  external/wpt/infrastructure

NOAUTOREVERT=true

No-Export: true
Validate-Test-Flakiness: skip
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I3a07ef8a800a5e098ee006ac01f81901bf188ad5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6635370
Auto-Submit: Jonathan Lee <jonathanjlee@google.com>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1472566}