AudioService: add fix for corrupted settings

Added correction of MODE_RINGER_STREAMS_AFFECTED setting in
case it is inconsistent when read from the database: ringtone,
notification and system streams are always affected by ringer mode.
A corruption of this setting persists accross reboots and propagates via
backup/restore causing devices to play notification and ringtones in silent mode.

Bug 7384750.

Change-Id: I23170413d01e6a8e34ef514f1516d7b9ab8bc656