[TRL] Rename sft trainer.

[ZHUI]

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Others

PR changes

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Description

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[codecov]

Codecov Report

Attention: Patch coverage is 21.42857% with 66 lines in your changes missing coverage. Please review.

Project coverage is 52.81%. Comparing base (75f44ef) to head (9e72e80).
Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
paddlenlp/trl/sft_trainer.py	21.25%	63 Missing ⚠️
paddlenlp/trl/llm_utils.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #9292      +/-   ##
===========================================
+ Coverage    52.72%   52.81%   +0.09%     
===========================================
  Files          662      661       -1     
  Lines       107328   106881     -447     
===========================================
- Hits         56584    56452     -132     
+ Misses       50744    50429     -315     

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