Allow sensors list to be empty am: d86376e2 am: 7a715246

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23677152



Change-Id: I49fa8d571bdf055d44c85ed9e035f7974d5305fb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>