Bug 1772495 [wpt PR 34298] - Remove 'tentative' from wpt test for exp…

…licit :scope in :has(), a=testonly

Automatic update from web-platform-tests
Remove 'tentative' from wpt test for explicit :scope in :has()

Remove 'tentative' from has-argument-with-explicit-scope.tentative.html
according to the issue resolution:
- w3c/csswg-drafts#6399
- w3c/csswg-drafts#7211

Bug: 669058
Change-Id: Iae1946abfb4a5739e95f0b7d90869b6088f87b5b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3688773
Commit-Queue: Byungwoo Lee <blee@igalia.com>
Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1010508}

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wpt-commits: 687d49f633cc46184dd2fcc18a34c04a15d0654c
wpt-pr: 34298