Audio Policy: Route both audio input and output to SCO with...

Audio Policy: Route both audio input and output to SCO with setCommunicationDevice(TYPE_BLUETOOTH_SCO)

Previously, calling setCommunicationDevice(TYPE_BLUETOOTH_SCO)
would incorrectly route audio output to the internal speaker
while only routing input to SCO.

This commit fix the issue by ensuring that both audio output and
input are correctly routed to SCO when
setCommunicationDevice(TYPE_BLUETOOTH_SCO)

Bug: 377191633
Bug: 383440209
Test: both audio output and input are correctly routed to SCO when
setCommunicationDevice(TYPE_BLUETOOTH_SCO)
Test: m
Flag: com.android.media.audioserver.use_bt_sco_for_media

Change-Id: I79c8721e264e4faa5017de2449801853bd6367fa