Check user_default_dashboard? first

Check user_default_dashboard? before show_gold_trial? as it's less
resource intensive.

ee/app/helpers/ee/dashboard_helper.rb

@@ -22,7 +22,9 @@ module EE
     end
 
     def user_default_dashboard?(user = current_user)
-      controller_action_to_child_dashboards.any? {|dashboard| dashboard == user.dashboard }
+      return false unless user
+
+      controller_action_to_child_dashboards.any? { |dashboard| dashboard == user.dashboard }
     end
   end
 end

ee/app/views/shared/_gold_trial_callout.html.haml

-- if show_gold_trial? && user_default_dashboard?
+- if user_default_dashboard? && show_gold_trial?
   .pt-1.d-none.d-md-block{ class: container_class }
     .user-callout.promotion-callout.thin-callout.js-gold-trial-callout{ data: { uid: 'trial_callout_dismissed', feature_id: UserCalloutsHelper::GOLD_TRIAL, dismiss_endpoint: user_callouts_path } }
       .bordered-box.justify-content-left.align-items-center