Don't send strict to HuggingFace API as it's not supported by their types and at least some models

[DouweM]

Reported on Slack:

I'm trying to use Qwen/Qwen3-Coder-480B-A35B-Instruct through Hugging Face.
I get the following error on every call:
E           pydantic_ai.exceptions.ModelHTTPError: status_code: 500, model_name: Qwen/Qwen3-Coder-480B-A35B-Instruct, body: {'message': 'Encountered a server error, please try again. strict=True is not supported for Qwen Coder model.', 'type': 'server_error'}

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