Add test for self-referencing style() queries
There should be no need for cycle detection in:
@container style(--foo: var(--foo)) {}
Bug: 362431895
Change-Id: Ia41d6c0afb6b79fff8ab6bdb2ae3c86eaa84f8e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5822151
Commit-Queue: Rune Lillesveen futhark@chromium.org
Reviewed-by: Steinar H Gunderson sesse@chromium.org
Cr-Commit-Position: refs/heads/main@{#1347910}