Remove a couple of additional places where we would construct tensors - aliases of params, inputs (#98950)
Removes two additional places where we would construct tensors
- Non-static inputs. These are only constructed to invoke the `copy_` kernel and do not own memory so we can construct them only once
- Aliases of persistent static inputs (parameters). the memory will be permanently live and is not managed by the cudagraph tapes.
(also sneaking in a bug fix around unaligned static idx)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/98950
Approved by: https://github.com/jansel
