Bug 1816063 [wpt PR 38443] - [mathml] Add more tests for layout algorithms with speci...

Bug 1816063 [wpt PR 38443] - [mathml] Add more tests for layout algorithms with specified width/height, a=testonly

Automatic update from web-platform-tests
[mathml] Add more tests for layout algorithms with specified width/height

This is a followup of [1] with more tests for MathML elements that
have a specified width/height:

- frac-bar-003.html: Verify that the painted bar takes the specified
  width, not the one of the children.

- width-height-001.html: Don't skip mtable (in the past the test was
  checking the properties are ignored, but this changed in [1]).

- width-height-002.html, width-height-003.html: Add tests to verify
  the position where the math content is rendered when a larger
  width/height is specified.

- TestExpectations: Remove obsolete Failure expectations.

[1] https://chromium-review.googlesource.com/c/chromium/src/+/4221437
[2] https://github.com/w3c/mathml-core/issues/75

Bug: 6606
Change-Id: I5ea7c33eed9fde8b53ccd0400e6fcfa5eab055a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4233950
Commit-Queue: Frédéric Wang <fwang@igalia.com>
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1103928}

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wpt-commits: 7b80eda0eaf5c083674bd72f5b4d5c7e5e2be955
wpt-pr: 38443