fix: network anomalies where the connections allocated by the connection pool are unavailable

[menshibin]

Description

1. Fix network anomalies where the connections allocated by the connection pool are unavailable.
2. Add cloud service tmq test case.

Jira: https://jira.taosdata.com:18080/browse/TD-35471

Checklist

Please check the items in the checklist if applicable.

• Is the user manual updated?
• Are the test cases passed and automated?
• Is there no significant decrease in test coverage?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.09%. Comparing base (ee4f4e9) to head (6606b9c).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #85      +/-   ##
==========================================
+ Coverage   79.65%   80.09%   +0.43%     
==========================================
  Files          24       24              
  Lines        1819     1819              
  Branches      251      252       +1     
==========================================
+ Hits         1449     1457       +8     
+ Misses        284      278       -6     
+ Partials       86       84       -2     

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