[Bug] W16A16 quantization, qdq_error is empty, but W8A8 is normal

[zccyman]

Describe Question:

when I use W16A16 quantization in main branch, I cann't get qdq_error and xmodel_err, because I found that qdq_error and xmodel_err are all empty. I eventually found that model.graph.value_info is same as the input model after the function "load_model_with_shape_infer", so I don't know how to fix it. I debug my code with "mobilenetv2-7.onnx".

[yufenglee]

@chenfucn, could you help take a look?

[github-actions]

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