[ISSUE #8213] Optimize some code style in remoting module

[Willhow-Gao]

Which Issue(s) This PR Fixes

Fixes #8213

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 11.53846% with 23 lines in your changes are missing coverage. Please review.

Project coverage is 42.89%. Comparing base (9c8fdb7) to head (b599f44).

Files	Patch %	Lines
...pache/rocketmq/remoting/common/RemotingHelper.java	13.33%	13 Missing :warning:
...e/rocketmq/remoting/netty/NettyRemotingClient.java	14.28%	6 Missing :warning:
...g/apache/rocketmq/common/filter/impl/Operator.java	0.00%	2 Missing :warning:
...mon/fastjson/GenericMapSuperclassDeserializer.java	0.00%	1 Missing :warning:
...apache/rocketmq/common/filter/impl/PolishExpr.java	0.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #8214   +/-   ##
==========================================
  Coverage      42.89%   42.89%           
+ Complexity     10369    10366    -3     
==========================================
  Files           1270     1270           
  Lines          88727    88716   -11     
  Branches       11407    11398    -9     
==========================================
- Hits           38061    38057    -4     
+ Misses         45960    45954    -6     
+ Partials        4706     4705    -1     

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[github-actions[bot]]

This PR was closed because it has been inactive for 3 days since being marked as stale.