Fix the TypeError issue in quantize.py (#19459)

### Description
<!-- Describe your changes. -->
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
Fix related bug as described in
#19430

onnxruntime/python/tools/quantization/quantize.py

@@ -479,7 +479,7 @@ def inc_dataloader():
         del dataloader
         model = sq.transform(extra_options.get("SmoothQuantAlpha", 0.5), extra_options.get("SmoothQuantFolding", True))
         sq_path = tempfile.TemporaryDirectory(prefix="ort.quant.")
-        model_input = Path(sq_path).joinpath("sq_model.onnx").as_posix()
+        model_input = Path(sq_path.name).joinpath("sq_model.onnx").as_posix()
         model.save(model_input)
         nodes_to_exclude.extend([i.name for i in model.model.graph.node if i.name not in orig_nodes])
         model = load_model_with_shape_infer(Path(model_input))  # use smooth quant model for calibration