sideways: fix Has{Top,Left}Overflow for flexboxes
There are probably lots of places in flex that assume sideways-lr is not
possible.
Bug: 40501131
Change-Id: If9dd9683f1c0c482c87ea5a7aeadef0eaf92b6e3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5861482
Commit-Queue: Kent Tamura tkent@chromium.org
Reviewed-by: Kent Tamura tkent@chromium.org
Auto-Submit: David Grogan dgrogan@chromium.org
Cr-Commit-Position: refs/heads/main@{#1356296}