Bug 1881020 [wpt PR 44674] - [anchor] Anchor queries on non-OOF must use fallback...

Bug 1881020 [wpt PR 44674] - [anchor] Anchor queries on non-OOF must use fallback, a=testonly

Automatic update from web-platform-tests
[anchor] Anchor queries on non-OOF must use fallback

For non-OOF elements, we currently implement a used-value time
conversion of any length with anchor queries: the inset and sizing
properties become their initial value whenever we have an anchor
query.

The spec is (now) very clear on how this should work: we should always
just use the fallback value of the query. Note that all anchor queries
have a fallback value: it set to 0px if not provided by the author.

Fixed: 325990051
Change-Id: If3f38b45c8235237dbf6c62b366ef184e267d82f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5307086
Commit-Queue: Anders Hartvoll Ruud <andruud@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1262701}

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wpt-commits: 9b1f75c7e92d14a5eea5b93672245c1f050283cf
wpt-pr: 44674