fix RaftConfig is always {}

[godhth]

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What is the purpose of the change

fix #11647

Brief changelog

XX

Verifying this change

XXXX

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.69%. Comparing base (a7d1c35) to head (07c3a96).
Report is 212 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #11648      +/-   ##
=============================================
- Coverage      66.75%   66.69%   -0.07%     
+ Complexity      8828     8822       -6     
=============================================
  Files           1237     1237              
  Lines          40615    40615              
  Branches        4322     4322              
=============================================
- Hits           27114    27087      -27     
- Misses         11539    11566      +27     
  Partials        1962     1962              

Files with missing lines	Coverage Δ
...libaba/nacos/core/distributed/raft/RaftConfig.java	56.52% <100.00%> (+4.34%)	⬆️

... and 6 files with indirect coverage changes

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