Moves script_failure conditional over lambda

So the 'failed' message can actually indicate if the build failed or not

app/serializers/job_entity.rb

@@ -26,7 +26,7 @@ class JobEntity < Grape::Entity
   expose :created_at
   expose :updated_at
   expose :detailed_status, as: :status, with: StatusEntity
-  expose :callout_message, if: -> (*) { failed? }
+  expose :callout_message, if: -> (*) { failed? && !build.script_failure? }
   expose :recoverable, if: -> (*) { failed? }
 
   private
@@ -54,7 +54,7 @@ class JobEntity < Grape::Entity
   end
 
   def failed?
-    build.failed? && !build.script_failure?
+    build.failed?
   end
 
   def callout_message