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- [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 3.1.11
* Operating System version: MAC
* Java version: 1.8

### Steps to reproduce this issue

1. 使用3.1.11的版本定义一个接口提供服务，接口中包含相同名字不同参数的X个方法，那么在provider的url上methods参数就会有多个重复的方法名
2. 在2.6.x的consumer端引用该服务时，methodInvokerMap会根据相同方法名存放X个重复invoker地址，如果默认使用random负载均衡，相当于该provider有着X倍的权重一样，压力会是X倍
3. 在刚升dubbo3的时候，如果一台机器收到的流量是其他机器的X倍，可能压力较大会有风险

![duplicate](https://github.com/apache/dubbo/assets/3276231/fa4c2aab-e13c-4bd8-8b8a-3bfada07175c)
![addMap](https://github.com/apache/dubbo/assets/3276231/79b59170-020a-482e-82e2-0ebd6e162d67)


Pls. provide [GitHub address] to reproduce this issue.

### Expected Behavior

在生成provider url的methods参数时，去掉重复的方法名

### Actual Behavior

同名不同参数的方法名，会在url上生成多次

红圈中是灰度发布一台的重复现象
![methods](https://github.com/apache/dubbo/assets/3276231/6c27459e-dc1b-4ad8-b1bf-57c51115c4d8)


// 
            if (!UrlUtils.isRegistry(curUrl) &&
                    !curUrl.getParameter(UNLOAD_CLUSTER_RELATED, false)) {
                List<Invoker<?>> invokers = new ArrayList<>();
                invokers.add(invoker);
                invoker = Cluster.getCluster(getScopeModel(), Cluster.DEFAULT).join(new StaticDirectory(curUrl, invokers), true);
            }
        } else {
            List<Invoker<?>> invokers = new ArrayList<>();
            URL registryUrl = null;
            for (URL url : urls) {
                // 
                // 
                invokers.add(protocolSPI.refer(interfaceClass, url));
                if (UrlUtils.isRegistry(url)) {
                    // 
                    registryUrl = url;
                }
            }
            if (registryUrl != null) {
                // 
                // 
                String cluster = registryUrl.getParameter(CLUSTER_KEY, ZoneAwareCluster.NAME);
                // 
                // 
                invoker = Cluster.getCluster(registryUrl.getScopeModel(), cluster, false).join(new StaticDirectory(registryUrl, invokers), false);
            } else {
                // 
                if (CollectionUtils.isEmpty(invokers)) {
                    throw new IllegalArgumentException("invokers == null");