[ONNX] Partially re-enable RoiAlign and RoiPool unit tests (#86169)
This PR depends on https://github.com/pytorch/vision/pull/6685
Pull Request resolved: https://github.com/pytorch/pytorch/pull/86169
Approved by: https://github.com/justinchuby, https://github.com/AllenTiTaiWang, https://github.com/abock
