Fix that shutter sound does not play after ringer mode changes to vibrator

Reproduce sequence:

1. Change ring volume to vibration in Settings > Sound & notification
   > Ring volume using touch
2. Launch camera app
3. Capture, but cannot hear shutter sound
4. Even change ringtone to maximum, shutter sound is not played before reboot

Bug: 22589664
Change-Id: I90eb044eaf21f3b558bf050bf1d9f0b33ea4888b