[Static Runtime] Fix bug in static_runtime::to_copy (#53634)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53634
Make the op signature of `static_runtime::to_copy` consistent with that of native_functions.yaml so it works with 2-5 args:
```
- func: to.dtype(Tensor self, ScalarType dtype, bool non_blocking=False, bool copy=False, MemoryFormat? memory_format=None) -> Tensor
variants: method
device_guard: False
```
(Note: this ignores all push blocking failures!)
Reviewed By: ajyu
Differential Revision: D26906726
fbshipit-source-id: b9203eb23619aba42b1bfed1a077401f9fe2ddf0
