[ISSUE #13038] 修复多个线程同时创建ConnectionManager类的Bean的问题 (#13042)

plugin/control/src/main/java/com/alibaba/nacos/plugin/control/connection/ConnectionControlManager.java

@@ -109,7 +109,7 @@ private void initConnectionRule() {
     }
 
     private void startConnectionMetricsReport() {
-        executorService.scheduleWithFixedDelay(new ConnectionMetricsReporter(), 0, 3000, TimeUnit.MILLISECONDS);
+        executorService.scheduleWithFixedDelay(new ConnectionMetricsReporter(), 3000, 3000, TimeUnit.MILLISECONDS);
     }
 
     public ConnectionControlRule getConnectionLimitRule() {