onnxruntime

83e0c6b9 - Add MatMulNBits shape infer to SymbolicShapeInference (#21246)

Add MatMulNBits shape infer to SymbolicShapeInference (#21246) ### Description Support MatMulNBits shape infer in SymbolicShapeInference MatMulNBits's B input is rank-2, so implicit merge does not apply. ### Motivation and Context [Issue with performing shape inference using symbolic_shape_infer.py with Phi-3 ONNX Models · Issue #21194 · microsoft/onnxruntime (github.com)](https://github.com/microsoft/onnxruntime/issues/21194)