[fix] shard-reshard下dp间is_matched行为不一致，以dp0为准

[bo-ke]

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 55.17%. Comparing base (3e54b85) to head (36f2899).
Report is 1 commits behind head on incubate/paddlenlp-fleety.

Files with missing lines	Patch %	Lines
paddlenlp/trainer/utils/sharding_io.py	0.00%	6 Missing ⚠️

Additional details and impacted files

@@                      Coverage Diff                      @@
##           incubate/paddlenlp-fleety    #9404      +/-   ##
=============================================================
- Coverage                      55.17%   55.17%   -0.01%     
=============================================================
  Files                            621      621              
  Lines                          96870    96875       +5     
=============================================================
  Hits                           53446    53446              
- Misses                         43424    43429       +5     

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