onnxruntime

[Fix] C++ API SetOutputShape for register custom op. (#21366)

### Description
Bug fix  for the SetOutputShape method in custom op shape inference.


### Motivation and Context

- Bug a :   A obvious bug that will cause all dimensions to be 1. 

https://github.com/microsoft/onnxruntime/blob/main/include/onnxruntime/core/session/onnxruntime_cxx_inline.h#L2014
integer_dims.push_back(dim.IsInt()); ->
integer_dims.push_back(dim.AsInt());

- Bug b :  vector out of range error
op's input maybe a scalar and shape is empty.

https://github.com/microsoft/onnxruntime/blob/main/include/onnxruntime/core/session/onnxruntime_cxx_inline.h#L1985

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Co-authored-by: mingyue <mingyue@amd.com>