fix breaking changes for ONNX Runtime Training (#122000)

Fixes breaking changes for ONNX Runtime Training.

PR #121102 introduced incompatibility with ORT training because of change in parameter type. Creating a PR to add previous parameter types and verified that it works with ORT training.

Error with current scenario:

```
site-packages/onnxruntime/training/ortmodule/torch_cpp_extensions/cpu/aten_op_executor/aten_op_executor.cc:60:40: error: invalid conversion from ‘const DLManagedTensor*’ to ‘DLManagedTensor*’ [-fpermissive]
at::Tensor tensor = at::fromDLPack(dlpack);

site-packages/torch/include/ATen/DLConvertor.h:15:46: note:   initializing argument 1 of ‘at::Tensor at::fromDLPack(DLManagedTensor*)’
TORCH_API Tensor fromDLPack(DLManagedTensor* src);
```
Co-authored-by: Nikita Shulga <[email protected]>
Pull Request resolved: #122000
Approved by: https://github.com/malfet

Author: 2 people

aten/src/ATen/DLConvertor.h

@@ -13,6 +13,10 @@ namespace at {
 TORCH_API ScalarType toScalarType(const DLDataType& dtype);
 TORCH_API DLManagedTensor* toDLPack(const Tensor& src);
 TORCH_API Tensor fromDLPack(DLManagedTensor* src);
+C10_DEPRECATED_MESSAGE("Please migrate to a non-const variant")
+inline Tensor fromDLPack(const DLManagedTensor* src) {
+  return fromDLPack(const_cast<DLManagedTensor*>(src));
+}
 TORCH_API Tensor
 fromDLPack(DLManagedTensor* src, std::function<void(void*)> deleter);
 TORCH_API DLDataType getDLDataType(const Tensor& t);