Merge "Add exported flag to exposed test runtime receivers" am: 57790223

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2269292



Change-Id: I857c9c771591810b32bea93e1a665a25a36d98e8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>