- [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();
    }
```

dubboRoute.setRoutedetail(dubboRouteDetailList);
            dubboRoute.setServices(new ArrayList<>());
            VirtualServiceRule virtualServiceRule = new VirtualServiceRule();
            
            VirtualServiceSpec spec = new VirtualServiceSpec();
            List<DubboRoute> dubbo = new ArrayList<>();
            dubbo.add(dubboRoute);
            spec.setDubbo(dubbo);
            virtualServiceRule.setSpec(spec);
            DubboRoute result = meshRuleRouter.getDubboRoute(virtualServiceRule, invocation);
            assertNotNull(result);
        }
        {
            List<DubboRouteDetail> dubboRouteDetailList = new ArrayList<>();
            DubboRouteDetail dubboRouteDetail = new DubboRouteDetail();
            dubboRouteDetail.setName("test");
            List<DubboMatchRequest> match = new ArrayList<>();
            DubboMatchRequest dubboMatchRequest = new DubboMatchRequest();
            DubboMethodMatch dubboMethodMatch = new DubboMethodMatch();
            StringMatch stringMatch = new StringMatch();
            stringMatch.setExact("sayHello");
            dubboMethodMatch.setName_match(stringMatch);
            dubboMatchRequest.setMethod(dubboMethodMatch);
            match.add(dubboMatchRequest);
            dubboRouteDetail.setMatch(match);
            List<DubboRouteDestination> dubboRouteDestinations = new ArrayList<>();
            dubboRouteDestinations.add(new DubboRouteDestination());
            dubboRouteDetail.setRoute(dubboRouteDestinations);
            dubboRouteDetailList.add(dubboRouteDetail);
            dubboRoute.setRoutedetail(dubboRouteDetailList);