depricated torch.set_default_tensor_type()

# Issue
## Problem Description
torch.set_default_tensor_type() as of PyTorch 2.1
## Expected Behavior

## What Needs to be Done
use torch.set_default_dtype() and torch.set_default_device() as alternatives
## How Can It Be Tested or Reproduced

use set_up_backend("torch") with PyTorch >= 2.1