Sync EE with CE

ee/lib/ee/gitlab/metrics_dashboard/processor.rb

@@ -4,8 +4,15 @@ module EE
   module Gitlab
     module MetricsDashboard
       module Processor
+       extend ::Gitlab::Utils::Override
+
+        EE_SEQUENCE = [
+          Stages::AlertsInserter
+        ].freeze
+
+        override :sequence
         def sequence
-          super + [Stages::AlertsInserter]
+          super + EE_SEQUENCE
         end
       end
     end

ee/lib/ee/gitlab/metrics_dashboard/stages/alerts_inserter.rb

@@ -25,8 +25,9 @@ module EE
             alerts = ::Projects::Prometheus::AlertsFinder
                        .new(project: project, environment: environment)
                        .execute
+                       .pluck(:prometheus_metric_id)
 
-            @metrics_with_alerts = Set.new(alerts.map(&:prometheus_metric_id))
+            @metrics_with_alerts = Set.new(alerts)
           end
 
           def alert_path(metric_id, project, environment)