[Bugfix] Standardize custom HF Processor init

[DarkLight1337]

Purpose

• Per-request kwargs should override config kwargs when initializing the HF processor.
• Initialize image processor outside of HF processor constructor for GLM4V and Qwen-VL, so that the initializer's signature follows standard HF conventions.

Test Plan

Test Result

---

Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.
• (Optional) Release notes update. If your change is user facing, please update the release notes draft in the Google Doc.

[gemini-code-assist]

Code Review

This pull request standardizes the initialization of custom Hugging Face processors, focusing on how per-request keyword arguments override default configurations. The changes correctly adjust dictionary unpacking to prioritize user-provided arguments. Additionally, the initialization of image processors for GLM4V and Qwen-VL models is refactored into dedicated factory methods, which simplifies the main processor's constructor and improves code clarity. The implementation is sound and aligns with the stated goals.

[mergify]

Hi @DarkLight1337, the pre-commit checks have failed. Please run:

uv pip install pre-commit>=4.5.1
pre-commit install
pre-commit run --all-files

Then, commit the changes and push to your branch.

For future commits, pre-commit will run automatically on changed files before each commit.

Tip

Is mypy failing?

mypy is run differently in CI. If the failure is related to this check, please use the following command to run it locally:

# For mypy (substitute "3.10" with the failing version if needed)
pre-commit run --hook-stage manual mypy-3.10