[ISSUE #9737] Fix client memory leak on connection failure

[qianye1001]

Which Issue(s) This PR Fixes

Fixes #9737

Brief Description

How Did You Test This Change?

[fuyou001]

LGTM

[codecov-commenter]

Codecov Report

❌ Patch coverage is 30.76923% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.13%. Comparing base (64999c1) to head (0c64224).

Files with missing lines	Patch %	Lines
...e/rocketmq/remoting/netty/NettyRemotingClient.java	30.76%	9 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #9740      +/-   ##
=============================================
- Coverage      48.23%   48.13%   -0.11%     
+ Complexity     12171    12144      -27     
=============================================
  Files           1313     1313              
  Lines          93340    93340              
  Branches       11962    11963       +1     
=============================================
- Hits           45025    44928      -97     
- Misses         42746    42829      +83     
- Partials        5569     5583      +14     

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