Compatibility when torch.compile is not supported

[matthewdouglas]

System Info

Python 3.14
PyTorch 2.9.1
OS: Any

Reproduction

See:
#1795 (comment)
huggingface/trl#4225 (comment)

Expected behavior

We would like to guard our usage of torch.compile so that users on platforms where it is not supported (e.g. Python 3.14 and torch < 2.10) do not have an issue when a custom op is imported.