Add CTS tests for requestSelectedNbIotSatelliteSubscriptionId

Change-Id: I67168cd3c13a23e98334aef01a341be736bf61a6
Test: atest android.telephony.satellite.cts.SatelliteManagerTest
Test: atest android.telephony.satellite.cts.SatelliteManagerTestOnMockService
Bug: 378557737
FLAG: com.android.internal.telephony.flags.carrier_roaming_nb_iot_ntn
3 files changed