Add Carriers.APN_SET_ID and NO_SET_SET

Add them as hidden for now.

Bug: 70172263
Test: TelephonyProviderTest#testApnSetId
Change-Id: Id16dd5631d327f403a7347b72ecfb27a5e298541
Merged-In: Id16dd5631d327f403a7347b72ecfb27a5e298541
1 file changed