SHO: Mute audio during SHO to avoid audio leak

When SHO trigerr mute audio will called with flag 0
which is calling setAvrcpVolume and audio will leak
to DUT. Now flag volume 0 is changed to
mAudioManager.FLAG_BLUETOOTH_ABS_VOLUME to avoid
audio leak.

CRs-Fixed: 2367063
Change-Id: I3420a9e19885e3f876fd1e3ff390aeb4f3df4a66
1 file changed