• I have searched the issues of this repository and believe that this is not a duplicate.
• I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: 2.7.8
• Operating System version: MacOS
• Java version: 8
• Service register: nacos
• spring-cloud-starter-dubbo 2.2.2.RELEASE

Steps to reproduce this issue

1. Change dubbo register server into a bad address(like incorrect port)
2. Start dubbo application
3. Check QOS ready command, return true(as OK). curl "localhost:22222/ready"。
   
   

Expected Result

QOS ready command return "false", when DubboBootstrap is not ready or start failed.

Actual Result

return "true" as OK

relative PR

#5873