Better specify `torch.compile behaviour` on nested function/module

[bhack]

📚 The doc issue

Can we better specify the behavior and eventually the best practices when decorating a function or compiling a module and the effect on the nested modules and nested function call?

https://pytorch.org/tutorials/intermediate/torch_compile_tutorial.html

Suggest a potential alternative/fix

No response

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[awayzjj]

/assigntome

[ignaciobartol]

@awayzjj Are you still working on this issue? If not I would like to help. Thanks!

cc @sekyondaMeta