Query for data-dashboard-url attribute

Query for  data-dashboard-url attribute to get the usage ping
data for grafana embeds

lib/banzai/filter/inline_grafana_metrics_filter.rb

@@ -13,6 +13,7 @@ module Banzai
         doc.document.create_element(
           'div',
           class: 'js-render-metrics',
+          # Grafana usage ping depends on this implementation
           'data-dashboard-url': metrics_dashboard_url(params)
         )
       end

lib/gitlab/grafana_embed_usage_data.rb

@@ -4,20 +4,9 @@ module Gitlab
   class GrafanaEmbedUsageData
     class << self
       def issue_count
-        Issue.with_project_grafana_integration.find_each.count do |issue|
-          has_grafana_url?(issue)
-        end
-      end
-
-      private
-
-      def has_grafana_url?(issue)
-        html = Banzai.render(issue.description, project: issue.project)
-        result = Banzai::Filter::InlineGrafanaMetricsFilter.new(
-          html, { project: issue.project }
-        ).call
-        metric_node = result.at_css('.js-render-metrics')
-        metric_node ? metric_node&.attribute('data-dashboard-url').to_s : nil
+        Issue.with_project_grafana_integration.where(
+          Issue.arel_table[:description_html].matches('%data-dashboard-url%')
+        ).count
       end
     end
   end