代码自定义 FlowRuleManager.loadRules(flowRules) 不生效

在我们得项目中，我们想要实现使用java代码得方式去自定义流控规则，而不是通过sentinel-dashboard 控制台得方式，下面是我遇到得问题

## 代码
```java
@Component
public class NacosListener {

private static final String FLOW_RULE_DATA_ID = "esb-client-flow-rules";
private static final String FLOW_RULE_GROUP = "SENTINEL_GROUP";
private static final String NACOS_SERVER_ADDR = "localhost:8848";
private static final String NACOS_NAMESPACE = "36a6cffb-6ec5-4ed8-a357-f4170e2ab131";

@Autowired
FlowRuleNacosPublisher flowRuleNacosPublish;
// @NacosConfigListener(dataId = FLOW_RULE_DATA_ID, groupId = FLOW_RULE_GROUP)
@PostConstruct
public void onConfigChange() throws NacosException {
Properties properties = new Properties();
properties.put(PropertyKeyConst.SERVER_ADDR, NACOS_SERVER_ADDR);
properties.put(PropertyKeyConst.NAMESPACE, NACOS_NAMESPACE);

FlowRuleListConverter flowRuleListConverter = new FlowRuleListConverter();
// 创建 NacosDataSource 并设置转换器
NacosDataSource> nacosDataSource
= new NacosDataSource>(properties, FLOW_RULE_GROUP, FLOW_RULE_DATA_ID, flowRuleListConverter);

// 注册监听器，监听配置变化
nacosDataSource.getProperty().addListener(new PropertyListener>() {
@Override
public void configUpdate(List flowRules) {

// 获得了 nacos 中得规则 运用规则
try {
applyFlowRules(flowRules);
} catch (Exception e) {
e.printStackTrace();
}
}

@Override
public void configLoad(List flowRules) {

try {
applyFlowRules(flowRules);
} catch (Exception e) {
e.printStackTrace();
}
}
});

}

private void applyFlowRules(List flowRules) throws Exception {

System.out.println("______________________________________________________________________");
System.out.println(flowRules);
System.out.println("______________________________________________________________________");

List ruleEntities = new ArrayList<>();
flowRules.stream().forEach(item -> {
FlowRuleEntity flowRule = new FlowRuleEntity();
BeanUtils.copyProperties(item , flowRule);
ruleEntities.add(flowRule);
});

flowRuleNacosPublish.publish("esb-client" , ruleEntities );
FlowRuleManager.loadRules(flowRules);
}

private static class FlowRuleListConverter implements Converter> {
@Override
public List convert(String source) {
// 根据从 Nacos 获取的配置信息将其转换为限流规则对象
return JSON.parseObject(source, new TypeReference>() {
});
}
}

}
```

## 函数解释

注册一个nacos 配置监听器用于监听我设置的 一个关于sentinel 限流规则
我在这个监听器中实现了它的首次加载方法和更新方法，都是去执行一个 applyFlowRules(flowRules) 静态函数，其中flowRules 是一个 List 类型，在applyFlowRules 方法中，我 将 flowRules 发布到 sentienl-dashboard ，并将流控规则重新加载到 内存中

## 问题
经由applyFlowRules(flowRules) 函数执行后，流控规则可以正常发布到控制台，但是 执行了 FlowRuleManager.loadRules(flowRules) 却不起效果，流控规则不生效，请问有什么解决方法吗？

Start with FlowRuleManager.loadRules(flowRules) in applyFlowRules, then trace how the NacosDataSource listener supplies the List and how Sentinel consumes loaded rules. Reproduce the reported no-effect behavior from the shown NacosListener flow and compare the loaded rule state with the expected runtime behavior; done means the cause is isolated and a verified fix or documentation guidance is available.

Written by the indexing model from the issue text.