Use onUnlinked in health HAL am: 1e1627a5da am: b48ba49001 am: 2d035d5408

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/27145126

Change-Id: Ifd2299a25186a95a0a6738cbd4cff13fa8f73142
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>