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

### Environment

* Dubbo version: 3.0.3

### Steps to reproduce this issue

1. 启动 provider `-Ddubbo.application.register-mode=instance`
2. 启动 consumer `dubbo.application.service-discovery.migration=FORCE_APPLICATION`
3. 使用 `dubbo admin` 创建 mesh 路由
4. `org.apache.dubbo.registry.client.InstanceAddressURL#getParameters` 不能获取真正的 url 参数，导致路由规则匹配失败
![image](https://user-images.githubusercontent.com/43994656/134940925-96081a6c-500c-4b71-89cc-bbd22d0be296.png)
5. 原因在于 `getProtocolServiceKey()` 方法是从`RpcContext`中获取，此时获取的`protocolServiceKey` 为 null，导致获取的为 instance 参数，实际需要获取对应服务的参数。
```
    public Map<String, String> getParameters() {
        String protocolServiceKey = getProtocolServiceKey();
        if (StringUtils.isEmpty(protocolServiceKey)) {
            return getInstance().getAllParams();
        }
        return getServiceParameters(protocolServiceKey);
    }
```
```
    public String getProtocolServiceKey() {
        return RpcContext.getServiceContext().getProtocolServiceKey();
    }
```

{
            Invoker<?> invoker1 = mock(Invoker.class);
            URL invoker1URL = mock(URL.class);
            Map<String, String> invoker1Map = new HashMap<>();
            invoker1Map.put("env", "test2");
            when(invoker1URL.getParameters()).thenReturn(invoker1Map);
            when(invoker1.getUrl()).thenReturn(invoker1URL);
            invokers.add(invoker1);
        }
        {
            Invoker<?> invoker1 = mock(Invoker.class);
            URL invoker1URL = mock(URL.class);
            Map<String, String> invoker1Map = new HashMap<>();
            invoker1Map.put("env", "test3");
            when(invoker1URL.getParameters()).thenReturn(invoker1Map);
            when(invoker1.getUrl()).thenReturn(invoker1URL);
            invokers.add(invoker1);
        }
        
        List<DestinationRule> destinationRules = new ArrayList<>();
        
        {
            DestinationRule destinationRule1 = new DestinationRule();
            DestinationRuleSpec destinationRuleSpec = new DestinationRuleSpec();
            destinationRuleSpec.setHost("test1");
            List<Subset> subsetList = new ArrayList<>();
            Subset subset = new Subset();
            subset.setName("test1");
            Map<String, String> subsetTest1Lables = new HashMap<>();
            subsetTest1Lables.put("env", "test1");