Enable parallel_config to use commas as delimiters.

[Difers]

PR types

Others

PR changes

Others

Description

• https://github.com/PaddlePaddle/PaddleNLP/pull/8649 上述PR添加了","作为pipeline_parallel_config,sharing_parallel_config分隔符，但遗漏了一些处理，本PR对此做了补充。

[paddle-bot[bot]]

Thanks for your contribution!

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 6.25000% with 15 lines in your changes missing coverage. Please review.

Project coverage is 55.61%. Comparing base (3ebe938) to head (88b1f3a). Report is 4 commits behind head on develop.

Files	Patch %	Lines
paddlenlp/trainer/training_args.py	0.00%	12 Missing :warning:
paddlenlp/trainer/trainer.py	25.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #8677 +/- ## =========================================== - Coverage 55.62% 55.61% -0.01% =========================================== Files 620 620 Lines 96949 96962 +13 =========================================== - Hits 53929 53928 -1 - Misses 43020 43034 +14 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.