wrap model when lora is ON and only do evaluation.

[wtmlon]

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# Install and register `pre-commit` in the project folder
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• Add test cases into tests folder. If there are codecov issues, please add tests cases first.

PR types

PR changes

Description

wrap model when lora is ON and only do evaluation.

[wawltor]

LGTM

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 52.35%. Comparing base (ac095f5) to head (22d0489).
Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
paddlenlp/trainer/trainer.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #9803      +/-   ##
===========================================
+ Coverage    51.27%   52.35%   +1.07%     
===========================================
  Files          735      730       -5     
  Lines       121550   115522    -6028     
===========================================
- Hits         62329    60476    -1853     
+ Misses       59221    55046    -4175     

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