Add seat belt properties to the emulator for CTS tests am: 3c7a832aca am: 0f736f1595 am: a4bb671db8

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/19419601

Change-Id: Iced8e3a90cea4e67150c86fd8aaf529fa2b4a10b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>