relax requirement for patch size and config for llava preprocessor

[eaidova]

What does this PR do?

• add processor configuration parameters on export stage if missed
• check and require config only for transformers>=4.48 (previous versions supports image preprocessing without patch_size)

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[AlexKoff88]

@echarlaix, @IlyasMoutawwakil, please prioritize a review for this hot fix, thankt

[eaidova]

failed tests are not related to these changes (connection to hf hub issues, python3.9 streamer import issue with transformers 4.48 on langchain side), image downloading corruption