Merge changes from topic "cherrypicker-L36300030001460179:N75000030022755462" into udc-mainline-prod

* changes:
  Clarify that an EID is a Find My Device network EID
  Make android.hardware.bluetooth.finder apex_avilable for com.android.tethering
  Bluetooth Finder: Interface for Bluetooth Finder and Freeze the AIDL API