Merge "[flexiglass] Pattern bouncer UX polish." into udc-dev am: e2ccf110 am: a5ab019a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23246162



Change-Id: I90de907954f7a3e59cf51db8b9fc8a3ef2c987d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>