Merge "Fix TV AlertDialog minimum button bar height" into udc-dev am: 634673bc am: b9ceec7d am: b97b8504 am: a9838922

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22988297



Change-Id: I597a7141378dc4a2b44146c56ec929af5779fb8c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>