Refactor xds support notify

[AlbumenJ]

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

Environment

• Dubbo version: xxx
• Operating System version: xxx
• Java version: xxx

Steps to reproduce this issue

1. xxx
2. xxx
3. xxx

Pls. provide [GitHub address] to reproduce this issue.

Expected Behavior

Actual Behavior

If there is an exception, please attach the exception trace:

Just put your stack trace here!

[aamingaa]

I want to try, please assign to me : )

[AlbumenJ]

I want to try, please assign to me : )

done

[chickenlj]

Any update on this task?

[aamingaa]

Any update on this task?
In process : https://github.com/apache/dubbo/pull/10885/files