read the discard property of the willDisplayEvent to skip waiting on display

Author: emawby

OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/generation/impl/NotificationGenerationProcessor.kt

@@ -105,7 +105,9 @@ internal class NotificationGenerationProcessor(
                         GlobalScope.launch(Dispatchers.IO) {
                             _lifecycleService.externalNotificationWillShowInForeground(notificationWillDisplayEvent)
 
-                            if (notificationWillDisplayEvent.isPreventDefault) {
+                            if (notificationWillDisplayEvent.discard) {
+                                wantsToDisplay = false;
+                            } else if (notificationWillDisplayEvent.isPreventDefault) {
                                 // wait on display waiter. If the caller calls `display` on the notification,
                                 // we will exit `waitForWake` and set `wantsToDisplay` to true. If the callback
                                 // never calls `display` we will timeout and never set `wantsToDisplay` to true.