fix(huggingface): Endpoint doesn't accept max_new_tokens anymore

[njbrake]

Description

hf expects max_tokens and no longer accepts max_new_tokens...

PR Type

🆕 New Feature 🐛 Bug Fix 💅 Refactor 📚 Documentation 🚦 Infrastructure ## Relevant issues

Checklist

• I have added unit tests that prove my fix/feature works
• New and existing tests pass locally
• Documentation was updated where necessary
• I have read and followed the contribution guidelines```

[njbrake]

Integration tests: https://github.com/mozilla-ai/any-llm/actions/runs/18717792245

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
src/any_llm/providers/huggingface/utils.py	80.35% <ø> (-0.68%)	⬇️

... and 35 files with indirect coverage changes

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