Update the VoNR setting after carrier config change

Confirm whether vonr_enabled_bool is true and then set the setting
according to the value stored in telephony.db, if it has not been
overwritten(-1), it will be enabled by default. If vonr_enabled_bool
is false, hard disabled.

Bug: 202150953
Test: atest GsmCdmaPhoneTest
Change-Id: I11d50c7ff1e0c11efb56b97ed8c8e664c8241a21