Fix save&load

[xingmingyyj]

PR types

Others

PR changes

Others

Description

修复auto_trainer的save,load

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

Attention: Patch coverage is 2.85714% with 68 lines in your changes missing coverage. Please review.

Project coverage is 55.76%. Comparing base (c6c2cd8) to head (31efe9a).
Report is 7 commits behind head on develop.

Files	Patch %	Lines
paddlenlp/trainer/auto_trainer.py	0.00%	59 Missing ⚠️
paddlenlp/trainer/trainer.py	18.18%	9 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #8652      +/-   ##
===========================================
- Coverage    55.79%   55.76%   -0.04%     
===========================================
  Files          620      620              
  Lines        96659    96713      +54     
===========================================
+ Hits         53928    53929       +1     
- Misses       42731    42784      +53     

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