dubbo.registry.simplified=true and the register config won't take effect

[imsunv]

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