Add new warning dialogue when user is Resetting mobile network settings.

If the user is reseting mobile network settings and have all these
conditions:
- No Wi-fi
- Has check to delete all eSIMs
- Has a least one RAC sim carrier
Then show the warning dialogue.

Test: make, manually test, atest SubSettingLauncherTest, atest ResetNetworkTest,  atest SubscriptionUtilTest
Bug: 328649510
Change-Id: I47d9b868b649b259d5e4008ec742317d2cb7cf51

src/com/android/settings/network/SubscriptionUtil.java

@@ -80,6 +80,7 @@ public class SubscriptionUtil {
 
     private static List<SubscriptionInfo> sAvailableResultsForTesting;
     private static List<SubscriptionInfo> sActiveResultsForTesting;
+    @Nullable private static Boolean sEnableRacDialogForTesting;
 
     @VisibleForTesting
     public static void setAvailableSubscriptionsForTesting(List<SubscriptionInfo> results) {
@@ -91,6 +92,11 @@ public class SubscriptionUtil {
         sActiveResultsForTesting = results;
     }
 
+    @VisibleForTesting
+    public static void setEnableRacDialogForTesting(boolean enableRacDialog) {
+        sEnableRacDialogForTesting = enableRacDialog;
+    }
+
     public static List<SubscriptionInfo> getActiveSubscriptions(SubscriptionManager manager) {
         //TODO (b/315499317) : Refactor the subscription utils.
 
@@ -875,6 +881,19 @@ public class SubscriptionUtil {
         return Arrays.stream(carriersThatUseRAC).anyMatch(cid -> cid == carrierId);
     }
 
+    /**
+     * Check if warning dialog should be presented when erasing all eSIMS.
+     *
+     * @param context Context to check if any sim carrier use RAC and device Wi-Fi connection.
+     * @return {@code true} if dialog should be presented to the user.
+     */
+    public static boolean shouldShowRacDialog(@NonNull Context context) {
+        if (sEnableRacDialogForTesting != null) {
+            return sEnableRacDialogForTesting;
+        }
+        return !isConnectedToWifi(context) && hasSubscriptionWithRacCarrier(context);
+    }
+
     /**
      * Retrieves NetworkCapabilities for the active network.
      *