sensorservice: ProximitySensor needs to report correct sensor state. am: cebf2e6cd6 am: 92a114dc02

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/15459770

Change-Id: Iba0ac2c980d02e48f051001d97ff5856d8f4eced