Merge "cameraserver: remove assumption that status change callbacks must be called from cameraserver process." into rvc-dev am: f00b91b986 am: 0ab3f6cf16

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/11816228

Change-Id: I23cd3f252e81e29939828eb97fde2423a3236a11