Guard exposed carrier configs with aconfig flag

The following carrier configs for additional call settings
are guarded with aconfig flag:
- KEY_ADDITIONAL_SETTINGS_CALLER_ID_VISIBILITY_BOOL
- KEY_ADDITIONAL_SETTINGS_CALL_WAITING_VISIBILITY_BOOL

Bug: 310264981
Test: atest FrameworkTelephonyTests and CtsTelephonyTestCases
Change-Id: Ic32924d3c49cada9819a410e0ae7d50382dd7130