Sort ParticipantsData in order of the slot id

getSelfParticipants() returns the ParticipantData list arranged in
ascending order of the slot id to show SIM UIs from lowest to highest id
consistently.

Test: Verify SettingsFragment and SimSelector order in multi-sim device

Change-Id: I0f5f27c6467cb21a6d11271d1a0a6beef36630a6
Signed-off-by: Taesu Lee <taesu82.lee@samsung.com>

src/com/android/messaging/datamodel/data/SelfParticipantsData.java

@@ -20,6 +20,8 @@ import android.database.Cursor;
 import androidx.collection.ArrayMap;
 
 import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 
 import com.android.messaging.util.OsUtil;
@@ -61,6 +63,15 @@ public class SelfParticipantsData {
                 list.add(self);
             }
         }
+        Collections.sort(
+                list,
+                new Comparator() {
+                    public int compare(Object o1, Object o2) {
+                        int slotId1 = ((ParticipantData) o1).getSlotId();
+                        int slotId2 = ((ParticipantData) o2).getSlotId();
+                        return slotId1 > slotId2 ? 1 : -1;
+                    }
+                });
         return list;
     }