Optimize the callback

Author: aurimasc

com.unity.mobile.notifications/Runtime/Android/AndroidNotificationCallback.cs

@@ -1,3 +1,4 @@
+using System;
 using UnityEngine;
 
 namespace Unity.Notifications.Android
@@ -8,6 +9,17 @@ public NotificationCallback() : base("com.unity.androidnotifications.Notificatio
         {
         }
 
+        public override AndroidJavaObject Invoke(string methodName, AndroidJavaObject[] args)
+        {
+            if (methodName.Equals("onSentNotification", StringComparison.InvariantCulture) && args != null && args.Length == 1)
+            {
+                onSentNotification(args[0]);
+                return null;
+            }
+
+            return base.Invoke(methodName, args);
+        }
+
         public void onSentNotification(AndroidJavaObject notification)
         {
             AndroidReceivedNotificationMainThreadDispatcher.GetInstance().EnqueueReceivedNotification(notification);