[3.3] Getting all nacos instances without subscription

[zrlw]

What is the purpose of the change?

try to fix #15107

Checklist

• Make sure there is a GitHub_issue field for the change.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Make sure gitHub actions can pass. Why the workflow is failing and how to fix it?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 77.77778% with 2 lines in your changes missing coverage. Please review.

Project coverage is 58.88%. Comparing base (0871406) to head (bbce7eb).
Report is 9 commits behind head on 3.3.

Files with missing lines	Patch %	Lines
...org/apache/dubbo/registry/nacos/NacosRegistry.java	66.66%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                3.3   #15110      +/-   ##
============================================
- Coverage     60.75%   58.88%   -1.88%     
+ Complexity    10865       12   -10853     
============================================
  Files          1882     1883       +1     
  Lines         86009    86014       +5     
  Branches      12887    12886       -1     
============================================
- Hits          52259    50652    -1607     
- Misses        28308    29840    +1532     
- Partials       5442     5522      +80     

Flag	Coverage Δ
integration-tests	?
samples-tests	?
unit-tests	58.88% <77.77%> (-0.04%)	⬇️

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[uzong]

I have been troubled by this problem for a day. It is a sporadic problem and it is very annoying. I have upgraded dubbo to 3.2.16. Is there a way to solve it?

[zrlw]

I have been troubled by this problem for a day. It is a sporadic problem and it is very annoying. I have upgraded dubbo to 3.2.16. Is there a way to solve it?

we tested and it seemed that this pr could resolve our no provider problem when restarting all clients and servers at the same time.

[AlbumenJ]

#15126

Close this PR. I will merge 3.2 into 3.3 later.

[AlbumenJ]

#15126

Close this PR. I will merge 3.2 into 3.3 later.

done