Fix ONNX model path initialization

[moria97]

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Motivation

Fix bug when using minerU when using ONNX models with mac:
ValueError: not find model file path <contextlib._GeneratorContextManager object at 0x3dab1ca90>/ch_PP-OCRv4_det_infer.onnx

Modification

The original code uses resource_path = importlib.resources.path('rapidocr_onnxruntime.models', ''), but importlib.resources.path just returns a context manager, we should wrap it with with clause. https://docs.python.org/3/library/importlib.resources.html#importlib.resources.path

BC-breaking (Optional)

Does the modification introduce changes that break the backward compatibility of the downstream repositories?
If so, please describe how it breaks the compatibility and how the downstream projects should modify their code to keep compatibility with this PR.

Use cases (Optional)

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Checklist

Before PR:

• Pre-commit or other linting tools are used to fix the potential lint issues.
• Bug fixes are fully covered by unit tests, the case that causes the bug should be added in the unit tests.
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• The documentation has been modified accordingly, like docstring or example tutorials.

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[moria97]

I have read the CLA Document and I hereby sign the CLA

[moria97]

@myhloli