AE discards lines with baselines outside the paragraph box.
This aligns Skottie's behavior with AE for default/top-alignment
(but not for any of the custom vertical alignment modes).
Bug: skia:9933
Change-Id: Id0318f0744bf89580774e89494faf19bfb6f6d14
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/272376
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
