### Steps to reproduce this issue

```
dubbo.registry.simplified=true 
<dubbo:service interface="org.apache.dubbo.demo.DemoService" register="false" ref="demoService" delay="5000"/>
```

when set dubbo.registry.simplified true. the dubbo.service.register won't take effect because of the `register`  key was simplified and will use default value `true`;

```
URL providerUrl = getProviderUrl(originInvoker);
...
final URL registeredProviderUrl = getRegisteredProviderUrl(providerUrl, registryUrl);
boolean register = registeredProviderUrl.getParameter("register", true);
```
may use `providerUrl` here



final Invoker<?> invoker;
            if (originInvoker instanceof InvokerDelegate) {
                invoker = ((InvokerDelegate<?>) originInvoker).getInvoker();
            } else {
                invoker = originInvoker;
            }
            
            URL originUrl = RegistryProtocol.this.getProviderUrl(invoker);
            String key = getCacheKey(originInvoker);
            ExporterChangeableWrapper<?> exporter = bounds.get(key);
            if (exporter == null) {
                logger.warn(new IllegalStateException("error state, exporter should not be null"));
                return;
            }
            
            URL currentUrl = exporter.getInvoker().getUrl();
            
            URL newUrl = getConfigedInvokerUrl(configurators, originUrl);
            newUrl = getConfigedInvokerUrl(providerConfigurationListener.getConfigurators(), newUrl);
            newUrl = getConfigedInvokerUrl(serviceConfigurationListeners.get(originUrl.getServiceKey())
                    .getConfigurators(), newUrl);
            if (!currentUrl.equals(newUrl)) {
                RegistryProtocol.this.reExport(originInvoker, newUrl);
                logger.info("exported provider url changed, origin url: " + originUrl +
                        ", old export url: " + currentUrl + ", new export url: " + newUrl);
            }
        }
        private List<URL> getMatchedUrls(List<URL> configuratorUrls, URL currentSubscribe) {
            List<URL> result = new ArrayList<URL>();
            for (URL url : configuratorUrls) {