[wpt] upgrade quirks tests to non-tentative
These are supported cross vendor:
https://wpt.fyi/results/quirks?label=master&label=experimental&aligned&q=tentative
Bug: 3534256
Change-Id: I00caf85afb8063682705aaeccfb50e3c3a17cd23
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5714328
Auto-Submit: Ari Chivukula arichiv@chromium.org
Commit-Queue: Steven Bingler bingler@chromium.org
Reviewed-by: Steven Bingler bingler@chromium.org
Cr-Commit-Position: refs/heads/main@{#1328255}