[automerger skipped] [DO NOT MERGE] Only show lock icon background with UDFPS am: ddfb4df1a8 am: 0e3f508465 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15897827

Change-Id: Ib9f8493f996f2677e2434c62d0cc58512a773f60