refactor(ocr): improve ONNX model initialization and resource handling

- Replace deprecated importlib.resources.path with importlib.resources.files
- Simplify code structure and improve readability
- Remove unnecessary comments and empty lines

magic_pdf/model/sub_modules/ocr/paddleocr/ocr_utils.py

@@ -7,7 +7,7 @@ import base64
 from magic_pdf.libs.boxbase import __is_overlaps_y_exceeds_threshold
 from magic_pdf.pre_proc.ocr_dict_merge import merge_spans_to_line
 
-import importlib.resources
+from importlib.resources import files
 from paddleocr import PaddleOCR
 from ppocr.utils.utility import check_and_read
 
@@ -328,13 +328,14 @@ class ONNXModelSingleton:
             self._models[key] = onnx_model_init(key)
         return self._models[key]
 
+
 def onnx_model_init(key):
     if len(key) < 4:
         logger.error('Invalid key length, expected at least 4 elements')
         exit(1)
 
     try:
-        with importlib.resources.path('rapidocr_onnxruntime.models', '') as resource_path:
+        resource_path = files("rapidocr_onnxruntime") / "models"
         additional_ocr_params = {
             "use_onnx": True,
             "det_model_dir": f'{resource_path}/ch_PP-OCRv4_det_infer.onnx',