optimize:optimize the exception message

[fanfanyimeng]

对于7599补充了 https://github.com/apache/incubator-seata/blob/2.x/changes/en-us/2.x.md
https://github.com/apache/incubator-seata/blob/2.x/changes/zh-cn/2.x.md 以及执行
check style:
https://github.com/apache/incubator-seata/actions/runs/17358488546/job/49275054510?pr=7599

[slievrly]

@fanfanyimeng PR tile Please use English. Please provide a brief description in "change" without making it too long.

[slievrly]

Why not modify it on the original PR? There's no need to submit a new PR.

[codecov]

Codecov Report

❌ Patch coverage is 57.14286% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.44%. Comparing base (06ec3fe) to head (c98862b).

Files with missing lines	Patch %	Lines
...che/seata/core/rpc/netty/NettyClientBootstrap.java	57.14%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #7616      +/-   ##
============================================
+ Coverage     61.36%   61.44%   +0.08%     
  Complexity      680      680              
============================================
  Files          1314     1314              
  Lines         49883    49887       +4     
  Branches       5876     5876              
============================================
+ Hits          30611    30655      +44     
+ Misses        16484    16446      -38     
+ Partials       2788     2786       -2     

Files with missing lines	Coverage Δ
...che/seata/core/rpc/netty/NettyClientBootstrap.java	58.58% <57.14%> (-1.42%)	⬇️

... and 8 files with indirect coverage changes

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[fanfanyimeng]

tile

第一次提交pr，￣□￣｜｜