Add "isNtnOnlyCarrier" field into metrics atoms for satellite sessions.

Bug: 383033991
Flag: com.android.internal.telephony.flags.carrier_roaming_nb_iot_ntn
Test: manually test
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:9bd323131eaba07c4ee536ddd28984e2ec9e7e75)
Merged-In: I72014af9c675f515cac193dc96ba72df4b4d552f
Change-Id: I72014af9c675f515cac193dc96ba72df4b4d552f