fix score_calculator_worker class verification

app/workers/score_calculator_worker.rb

@@ -3,7 +3,7 @@ class ScoreCalculatorWorker
   sidekiq_options queue: :score
 
   def perform(id, object_class)
-    return false unless %w(User LearningObject Collection)
+    return false unless %w(User LearningObject Collection).include? object_class
 
     object = object_class.constantize.find(id)