Keep the tertiary button align be the same as bc style(central_horizontal). am: d198d8ea75 am: 0279afd80e

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/setupdesign/+/18580228

Change-Id: Ie96d5f05fbfb758b9a7fc40d82d7c795c2ce2083
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>