Add preventDefault overload with discard parameter

Must use function overload instead of default parameter due to java limitation. @jvmoverloads does not work when the default parameter is defined in an interface

Author: emawby

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/notifications/INotificationWillDisplayEvent.kt

@@ -38,4 +38,11 @@ interface INotificationWillDisplayEvent {
      * caller still has the option to display the notification by calling `notification.display()`.
      */
     fun preventDefault()
+
+    /**
+     * Call this to prevent OneSignal from displaying the notification automatically.
+     * @param discard an [preventDefault] set to true to dismiss the notification with no
+     * possibility of displaying it in the future.
+     */
+    fun preventDefault(discard: Boolean)
 }

OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/NotificationWillDisplayEvent.kt

@@ -7,9 +7,15 @@ internal class NotificationWillDisplayEvent(
     override val notification: Notification,
 ) : INotificationWillDisplayEvent {
     var isPreventDefault: Boolean = false
+    var discard: Boolean = false
 
     override fun preventDefault() {
+        preventDefault(false)
+    }
+
+    override fun preventDefault(discard: Boolean) {
         Logging.debug("NotificationWillDisplayEvent.preventDefault()")
         isPreventDefault = true
+        this.discard = discard
     }
 }