[To rel/1.3][AINode] Return ainodeClient in clientPool

[ycycse]

(cherry picked from commit 0aa01f6)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 41.22%. Comparing base (9f5cdce) to head (77e342d).
Report is 1 commits behind head on dev/1.3.

Files with missing lines	Patch %	Lines
...ache/iotdb/commons/client/ainode/AINodeClient.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             dev/1.3   #15585      +/-   ##
=============================================
- Coverage      41.22%   41.22%   -0.01%     
  Complexity       198      198              
=============================================
  Files           3565     3565              
  Lines         230663   230663              
  Branches       27575    27575              
=============================================
- Hits           95101    95096       -5     
- Misses        135562   135567       +5     

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