Change getVisualVoicemailPackageName() to use subId

getVisualVoicemailPackageName() now acquires the pinned subId form
the TelphonyManager, instead of having a PhoneAccountHandle passed in.

Change-Id: I678362f6966531c1bb7885c6e1895b934bd7c397
Fixes: 35766370
Test: CTS TelephonyManagerTest
1 file changed