change getCallState from getPackageName to getOpPackageName

GetCallStateUsingPackage was reporting unusual packageNames in certain
cases. This looks to be a result of Telecom passing in the
context.getPackageName instead of context.getOpPackageName.

bug: 258729003
Test: manual
Change-Id: I075848e8732fc884f4247c8ba840b404c2af71a2