resource-group:fix issue that the deleted resource group still appear in metrics (#8722)

close #8716

resource-group: fix issue that the deleted resource group still appear in metrics

Signed-off-by: AndreMouche <AndreMouche@126.com>

Co-authored-by: ti-chi-bot[bot] <108142056+ti-chi-bot[bot]@users.noreply.github.com>

Author: AndreMouche

pkg/mcs/resourcemanager/server/manager.go

@@ -451,7 +451,7 @@ func (m *Manager) backgroundMetricsFlush(ctx context.Context) {
 					sqlCPUCost.DeleteLabelValues(r.name, r.name, r.ruType)
 					requestCount.DeleteLabelValues(r.name, r.name, readTypeLabel)
 					requestCount.DeleteLabelValues(r.name, r.name, writeTypeLabel)
-					availableRUCounter.DeleteLabelValues(r.name, r.name, r.ruType)
+					availableRUCounter.DeleteLabelValues(r.name, r.name)
 					delete(m.consumptionRecord, r)
 					delete(maxPerSecTrackers, r.name)
 					readRequestUnitMaxPerSecCost.DeleteLabelValues(r.name)