In ApnSettings, it always uses Carrier Config values of default subId.
So, wrong carrier config values are used for non-default subId.
To resolve this issue, read Carrier Config values based on subId.
Test: manual - Check Carrier Config values are read based on subId.
Bug: 111172301
Change-Id: I87e4cbb2e8020198fa03c2c84ef9bd10d5970341