fix spurious aot autograd warning (#95521) (#95614)
The _make_boxed logic probably needs a cleanup, but this fixes a spurious warning that we should get in before the release.
Confirmed that this used to emit a warning and no longer does:
```
import torch
lin = torch.nn.Linear(100, 10)
def f(x):
return lin(x)
opt_f = torch.compile(f)
opt_f(torch.randn(10, 100, requires_grad=False))
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/95521
Approved by: https://github.com/ngimel
