- [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();
    }
```

DestinationRule destinationRule1 = new DestinationRule();
            DestinationRuleSpec destinationRuleSpec = new DestinationRuleSpec();
            destinationRuleSpec.setHost("test1");
            List<Subset> subsetList = new ArrayList<>();
            Subset subset = new Subset();
            subset.setName("test4");
            Map<String, String> subsetTest1Lables = new HashMap<>();
            subsetTest1Lables.put("env", "test4");
            subset.setLabels(subsetTest1Lables);
            subsetList.add(subset);
            destinationRuleSpec.setSubsets(subsetList);
            destinationRule1.setSpec(destinationRuleSpec);
            destinationRules.add(destinationRule1);
        }
        vsDestinationGroup.setDestinationRuleList(destinationRules);
        meshRuleRouter.setVsDestinationGroup(vsDestinationGroup);
        meshRuleRouter.computeSubset();
        assertNotNull(meshRuleRouter.getSubsetMap());
        assertTrue(meshRuleRouter.getSubsetMap().size() == 3);
    }
    @Test
    public void findMatchDubboRouteDetail() {
        URL url = mock(URL.class);
        when(url.getServiceKey()).thenReturn("test");
        MeshRuleRouter meshRuleRouter = new MeshRuleRouter(url);
        Invocation invocation = mock(Invocation.class);
        when(invocation.getMethodName()).thenReturn("sayHello");
        when(invocation.getArguments()).thenReturn(new Object[]{"qinliujie"});
        when(invocation.getCompatibleParamSignatures()).thenReturn(new String[]{String.class.getName()});
        assertNull(meshRuleRouter.findMatchDubboRouteDetail(new ArrayList<>(), invocation));