Merge "Add support for onReject and onError for external hotword." into tm-dev...

Merge "Add support for onReject and onError for external hotword." into tm-dev am: 90579f32 am: 654794a9 am: 85ee3e91 am: 0d31ea00

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18308197



Change-Id: I9969b40d22dbeceb7d8d611f16961f5e075c5d82
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>