修复nacos服务发现clusters逻辑兼容问题

[qnnn]

Please provide issue(s) of this PR:
Fixes #
rollback
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• ApiServer
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• Does not have any user-facing changes. This may include API changes, behavior changes, performance improvements, etc.

[polaris-test-bot]

2024-02-21 19:16:14: =========TEST START==========

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (c4ae7cf) 54.95% compared to head (4959c66) 54.96%.

Files	Patch %	Lines
apiserver/nacosserver/core/storage.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1329   +/-   ##
=======================================
  Coverage   54.95%   54.96%           
=======================================
  Files         209      209           
  Lines       40400    40399    -1     
=======================================
+ Hits        22202    22205    +3     
+ Misses      15559    15557    -2     
+ Partials     2639     2637    -2     

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