Bug 1880651 [wpt PR 44626] - Reland "webnn: Remove sync methods", a=testonly

Bug 1880651 [wpt PR 44626] - Reland "webnn: Remove sync methods", a=testonly

Automatic update from web-platform-tests
Reland "webnn: Remove sync methods" (#44626)

This is a reland of commit a3e84dde09e099bebbe4793ffaa70679168130d6

This CL contains a few additional changes:
- Enables the async APIs on workers, which was causing bots to fail
  since workers could not call createContext()
- Rebaselines WPTs accordingly
- Updates the WPT expectations for the webnn-service-enabled virtual
  test suite

Original change's description:
> webnn: Remove sync methods
>
> See https://github.com/webmachinelearning/webnn/pull/548
>
> Deletes all sync methods and simplifies the names of all "Async"
> methods - e.g. BuildAsync() -> Build()
>
> Bug: 40283536, 41481333
> Change-Id: I3b38d987cb4641ea41ab9a974c46dcba16d5c108
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5292884
> Commit-Queue: Austin Sullivan <asully@chromium.org>
> Reviewed-by: Reilly Grant <reillyg@chromium.org>
> Reviewed-by: ningxin hu <ningxin.hu@intel.com>
> Reviewed-by: Alex Gough <ajgo@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1261223}

Cq-Include-Trybots: luci.chromium.try​:win11-x64-fyi-rel
Bug: 40283536, 41481333, 41485898
Change-Id: Iffcb922b8175a7181deba1f4c2faa953010ae5c0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5303774
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Austin Sullivan <asully@chromium.org>
Reviewed-by: Rafael Cintron <rafael.cintron@microsoft.com>
Reviewed-by: Alex Gough <ajgo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1262043}

Co-authored-by: Austin Sullivan <asully@chromium.org>
--

wpt-commits: 0e308a624676bfea808af80e9a6378ec94dce931
wpt-pr: 44626