[ChatTemplate] Fix chat template for Yuan when answer is contained within question.

[lvdongyi]

PR types

Bug fixes

PR changes

Others

Description

Fix chat template for Yuan when answer is contained within question.
This PR is related to #9444

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

Attention: Patch coverage is 90.69767% with 4 lines in your changes missing coverage. Please review.

Project coverage is 53.01%. Comparing base (1ba3bef) to head (9be04bf).
Report is 7 commits behind head on develop.

❗ Current head 9be04bf differs from pull request most recent head b6c9ac9

Please upload reports for the commit b6c9ac9 to get more accurate results.

Files with missing lines	Patch %	Lines
paddlenlp/transformers/yuan/tokenizer.py	90.69%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #9485      +/-   ##
===========================================
- Coverage    53.08%   53.01%   -0.08%     
===========================================
  Files          687      685       -2     
  Lines       109472   108944     -528     
===========================================
- Hits         58114    57756     -358     
+ Misses       51358    51188     -170     

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