Add carrier satellite feature flag into filter out logic in Settings

Null object reference exception happend when carrier satellite feature is disabled. whille filtering out satellite plmns from scanned plmns

Bug: 331182758
Test: atest NetworkSelectSettingsTest, manually test with feature enabled/disabled on pixel
Change-Id: I394e86ee9c26efdc9920006e0b8ca015500d5162

src/com/android/settings/network/telephony/NetworkSelectSettings.java

@@ -46,6 +46,7 @@ import androidx.preference.PreferenceCategory;
 
 import com.android.internal.annotations.Initializer;
 import com.android.internal.telephony.OperatorInfo;
+import com.android.internal.telephony.flags.Flags;
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.overlay.FeatureFactory;
@@ -437,6 +438,9 @@ public class NetworkSelectSettings extends DashboardFragment {
      */
     @VisibleForTesting
     protected List<String> getSatellitePlmnsForCarrierWrapper() {
+        if (!Flags.carrierEnabledSatelliteFlag()) {
+            return new ArrayList<>();
+        }
         return mSatelliteManager.getSatellitePlmnsForCarrier(mSubId);
     }