CloudMonitoring: Fix resource labels in query editor (#44550) (#44555)

(cherry picked from commit d3b8fc53aa)

Co-authored-by: Isabella Siu <Isabella.siu@grafana.com>

public/app/plugins/datasource/cloud-monitoring/CloudMonitoringMetricFindQuery.ts

@@ -100,6 +100,7 @@ export default class CloudMonitoringMetricFindQuery {
       return [];
     }
     const refId = 'handleLabelValuesQuery';
+    // REDUCE_MEAN is needed so the groupBy is not ignored
     const labels = await this.datasource.getLabels(selectedMetricType, refId, projectName, {
       groupBys: [labelKey],
       crossSeriesReducer: 'REDUCE_MEAN',

public/app/plugins/datasource/cloud-monitoring/components/MetricQueryEditor.tsx

@@ -66,7 +66,7 @@ function Editor({
   useEffect(() => {
     if (projectName && metricType) {
       datasource
-        .getLabels(metricType, refId, projectName, { groupBys, crossSeriesReducer })
+        .getLabels(metricType, refId, projectName)
         .then((labels) => setState((prevState) => ({ ...prevState, labels })));
     }
   }, [datasource, groupBys, metricType, projectName, refId, crossSeriesReducer]);