Add onnx test for batched_nms (#53175) (#64381)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64381
* Added new ONNX test for batched_nms
* Update test according to PR in torchvision
* Update test/onnx/test_pytorch_onnx_onnxruntime.py
Test Plan: Imported from OSS
Reviewed By: jansel
Differential Revision: D30919602
Pulled By: malfet
fbshipit-source-id: edfb5b9f75077429f7f242fd6ac06d962968dfba
Co-authored-by: Bowen Bao <imbowenbao@outlook.com>
