Add test_make_fx_model_train example (#980) (#82011)
Summary: Pull Request resolved: https://github.com/pytorch/functorch/pull/980
Test Plan: CI should pass
Differential Revision: D38078694
Pulled By: mostafaelhoushi
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82011
Approved by: https://github.com/Chillee
