Biases disappear in the mermaid file while importing onnx model in aidge

DEV BRANCH :

When I import my Yolov2 model with onnx, the mermaid file indicates that the biases from the conv layers seem to disappear, they are replaced by inputs.

Here is the onnx file : onnx model (wetransfer)

Here is the mermaid model : yolov2_mermaid.mmd

This is like a re-opened issue with this model, it was functionnal before.

Thanks