Added cons folding for ONNX mul, div, sqrt ops (#32077)
Summary:
An example of a model with such leaf nodes is faster_rcnn model. This PR helps optimizing onnx ops.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/32077
Reviewed By: hl475
Differential Revision: D19399622
Pulled By: houseroad
fbshipit-source-id: 35c628c6f1514b79f1bcf7982c25f0f4486f8941
