sensorservice: ProximitySensor needs to report correct sensor state. am: cebf2e6cd6 am: f3eabb3bfc

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

Change-Id: I0fe8fbcbcb89e4fe8e195018dfdce4f9b49ae039