onnxruntime

78b35652 - fix issue with obtaining the decoder layer number when converting the T5 model. (#17185)

fix issue with obtaining the decoder layer number when converting the T5 model. (#17185) ### Description fix issue with obtaining the decoder layer number when converting the T5 model. ### Motivation and Context fix issue： https://github.com/microsoft/onnxruntime/issues/17072 Test with [byt5-small](https://huggingface.co/google/byt5-small/tree/main) model, which has 12 encoder layers and 4 decoder layers. Here is the log.