[WPT] Triage css-masking tests

There were numerous css-masking WPT with existing bugs that had not been
updated in TestExpectations.

Bug: 432153,694218
Change-Id: I32ce83527431ec0eac036b33dd2113074423d535
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3396418


Reviewed-by: Fredrik Söderquist <fs@opera.com>
Auto-Submit: Stephen Chenney <schenney@chromium.org>
Commit-Queue: Stephen Chenney <schenney@chromium.org>
Cr-Commit-Position: refs/heads/main@{#961612}