Add meter appearance none rendering WPT tests
Spec definition:
"Widgets must not have their native appearance, and instead must have
their primitive appearance."
https://drafts.csswg.org/css-ui/#valdef-appearance-none
Bug: 40210066
Change-Id: Id1af2692b1cede5e79a96054b10e53198f3ba724
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5790065
Reviewed-by: Joey Arhar jarhar@chromium.org
Commit-Queue: Joey Arhar jarhar@chromium.org
Auto-Submit: Traian Captan tcaptan@chromium.org
Cr-Commit-Position: refs/heads/main@{#1343088}