Fix aten::_to_copy in DORT (#13682)
`aten::_to_copy` is not exportable to ONNX. In DORT, so it's replaced in
`_replace_to_copy_with_to`. This replacement logic becomes incorrect in latest PyTorch
commit, and this PR is a fix.
Basically, we examine more key-word attributes passed to
`aten::_to_copy` and if they lead to a type casting operator (i.e.,
mapped to ONNX's Cast), we replace that `aten::_to_copy` with
`aten::to`. Unsupported attributes are removed (with a low risk of
breaking FX graph's assumptions).
