Fix tests for a third time

app/assets/javascripts/monitoring/components/dashboard_panel.vue

@@ -374,6 +374,7 @@ export default {
       :graph-data="graphData"
       v-bind="$attrs"
       v-on="$listeners"
+      class="js-basic-chart"
     />
     <component
       :is="timeSeriesChartComponent"

ee/app/assets/javascripts/issues_analytics/components/issues_analytics.vue

@@ -157,7 +157,7 @@ export default {
         @created="onCreated"
       />
       <div class="d-flex">
-        <gl-chart-legend v-if="chart" :chart="chart" :series-info="seriesInfo" class="js-chart-legend" />
+        <gl-chart-legend v-if="chart" :chart="chart" :series-info="seriesInfo" />
         <div class="issues-analytics-legend">
           <span>{{ s__('IssuesAnalytics|Total:') }} {{ seriesTotal }}</span>
           <span>&#8226;</span>

ee/spec/features/clusters/cluster_health_dashboard_spec.rb

@@ -78,7 +78,7 @@ describe 'Cluster Health board', :js, :kubeclient, :use_clean_rails_memory_store
         expect(page).to have_css('.prometheus-graph')
         expect(page).to have_css('.prometheus-graph-title')
         expect(page).to have_css('[_echarts_instance_]')
-        expect(page).to have_css('.js-chart-legend')
+        expect(page).to have_css('.js-basic-chart')
       end
     end