[Grid] Exclude repeaters from grid-template serialization
Repeaters were incorrectly being serialized into grid-template
shorthands (and thus failed to round-trip). The parser handles this
scenario, so it's only a serialization issue.
WPT tests were missing this case, so this change adds it to several
test files.
Change-Id: I4719f4fd6157e795e4b2fe9d543a72462a0ebbf8
Bug: 370937462
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5936195
Reviewed-by: Ethan Jimenez ethavar@microsoft.com
Commit-Queue: Kurt Catti-Schmidt kschmi@microsoft.com
Reviewed-by: Kevin Babbitt kbabbitt@microsoft.com
Reviewed-by: Anders Hartvoll Ruud andruud@chromium.org
Cr-Commit-Position: refs/heads/main@{#1371667}