Skip vertical clipping in unclear case of font height=font size

Change-Id: Ib58c34f6ab3ff36e73b2d9d4b0d4f5d03c72c9dd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/267041
Commit-Queue: Julia Lavrova <jlavrova@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
5 files changed