[export] turn on replace_set_grad_with_hop_pass in pre_dispatch (#119915)
This PR turns on replace_set_grad_with_hop_pass for pre_dispatch export. To do that, we need to propagate the meta-data from original submodule to the new higher order op and fix the names of nodes as is required by the _sig_to_specs pass.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/119915
Approved by: https://github.com/tugsbayasgalan
ghstack dependencies: #119732, #119736, #119810, #119913, #119914
