restrict '5G Only' mode to standalone 5G supported carrier.

many carrier where 5G network options is available (in settings) doesn't really support standalone 5G and in that case setting it to 'NR/5G only' soft fails.

it is disabled for NSA carrier, calling options will be broken on NSA (non standalone 5G).

Author: empratyush

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

@@ -215,6 +215,7 @@ private final class PreferenceEntriesBuilder {
         private boolean mDisplay2gOptions;
         private boolean mDisplay3gOptions;
         private boolean mLteEnabled;
+        private boolean isNrSaAvailable; // Nr-Sa (5G standalone)
         private int mSelectedEntry;
         private int mSubId;
         private String mSummary;
@@ -278,6 +279,14 @@ public void updateConfig() {
                 }
 
                 mLteEnabled = carrierConfig.getBoolean(CarrierConfigManager.KEY_LTE_ENABLED_BOOL);
+                int[] supported5gOptions = carrierConfig.getIntArray(
+                        CarrierConfigManager.KEY_CARRIER_NR_AVAILABILITIES_INT_ARRAY);
+                isNrSaAvailable = supported5gOptions != null && com.google.common.primitives.Ints.contains(
+                        supported5gOptions,
+                        CarrierConfigManager.CARRIER_NR_AVAILABILITY_SA
+                ) && (mTelephonyManager.getAllowedNetworkTypesForReason(TelephonyManager.ALLOWED_NETWORK_TYPES_REASON_USER)
+                        & TelephonyManager.NETWORK_TYPE_BITMASK_NR
+                ) > 0;
             }
             Log.d(LOG_TAG, "PreferenceEntriesBuilder: subId" + mSubId
                     + " ,Supported5gRadioAccessFamily :" + mSupported5gRadioAccessFamily
@@ -460,7 +469,9 @@ void setPreferenceEntries() {
 
             if (!lteOnlyUnsupported && is5GSupported.get()) {
                 addNrOrLteOnlyEntry();
-                addNrOnlyEntry();
+                if (isNrSaAvailable) {
+                    addNrOnlyEntry();
+                }
             }
         }