Hack up make_fx to natively support varargs (#83210)
This is kind of nasty but it works. I attempted to fix FX
first but the inspect logic is impenetrable.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/83210
Approved by: https://github.com/Chillee, https://github.com/albanD
