onnxruntime

0453cbf0 - [VitisAI] Fix OrtShapeInferContext for optional inputs (#26199)

[VitisAI] Fix OrtShapeInferContext for optional inputs (#26199) ### Description When there is an optional input (empty input type) in the OrtShapeInferContext construction, use undefined data type and empty shape as a placeholder. ### Motivation and Context VitisAI EP may add nodes with optional inputs during graph optimization to meet the requirements of AMD AI compilers. This fix may help other execution providers to improve the graph optimization process.