Re-added the outcomeEventsController for public outcome methods

Author: mikechoch

OneSignalSDK/onesignal/src/main/java/com/onesignal/OneSignal.java

@@ -3116,6 +3116,11 @@ public static void sendOutcomeWithValue(@NonNull String name, float value, Outco
    }
 
    private static boolean isValidOutcomeEntry(String name) {
+      if (outcomeEventsController == null) {
+          OneSignal.Log(LOG_LEVEL.ERROR, "Make sure OneSignal.init is called first");
+          return false;
+      }
+
       if (name == null || name.isEmpty()) {
          OneSignal.Log(LOG_LEVEL.ERROR, "Outcome name must not be empty");
          return false;