【PPO】support dataproto & fix dataflow

[greycooker]

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pre-commit run --file XXXX.py

• Add test cases into tests folder. If there are codecov issues, please add tests cases first.

PR types

New features

PR changes

APIs

Description

修改PPO数据流

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

Attention: Patch coverage is 0.25641% with 389 lines in your changes missing coverage. Please review.

Project coverage is 49.55%. Comparing base (5b505e4) to head (9ee56ba).
Report is 12 commits behind head on develop.

Files with missing lines	Patch %	Lines
paddlenlp/datasets/rlhf_datasets/protocol.py	0.00%	307 Missing ⚠️
paddlenlp/datasets/rlhf_datasets/rl_dataset.py	0.00%	80 Missing ⚠️
paddlenlp/datasets/rlhf_datasets/__init__.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #10259      +/-   ##
===========================================
- Coverage    49.70%   49.55%   -0.16%     
===========================================
  Files          761      765       +4     
  Lines       124218   124608     +390     
===========================================
+ Hits         61744    61745       +1     
- Misses       62474    62863     +389     

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