[DO NOT MERGE] Fix biometric test flaky am: 2f180de6aa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/25723290

Change-Id: I23d5d57b96b6211d8b8ed505d6ba6df4d82a6c0f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>