[line-clamp] Add test for -webkit-line-clamp as a block-in-inline
This also fixes a bug in the existing webkit-line-clamp-047 test.
Bug: 40336192
Change-Id: I1b0d665bccfc8d79e52091b3155e9795db0c2240
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5850277
Reviewed-by: Ian Kilpatrick ikilpatrick@chromium.org
Commit-Queue: Andreu Botella abotella@igalia.com
Cr-Commit-Position: refs/heads/main@{#1353690}