Fixes#161943
## The Fix
I implemented a recursive unwrapping helper function in the `tensor_to_list.cpp` file that looks for wrapped tensors and unwraps them. The recursive implementation was needed for multi-level gradTrackingTensors.
Let me know if there is any more suggestions on fixing this issue!
@guilhermeleobas @KimbingNg
Pull Request resolved: https://github.com/pytorch/pytorch/pull/165184
Approved by: https://github.com/zou3519