[ONNX] shapeValueMap: Represent symbolic shape as value (#68203) (#69545)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69545
Test Plan: Imported from OSS
Reviewed By: msaroufim
Differential Revision: D32994272
Pulled By: malfet
fbshipit-source-id: 77cbdd78d01712faf4f9703549a2833340954509
Co-authored-by: jiafatom <jiafa@microsoft.com>
