Trying to run the stateful tests throws an error, e.g. running the tests for ivy_tests/test_ivy/test_stateful/test_activations.py::test_elu throws an error

E           ModuleNotFoundError: No module named ‘ELU'

This is the same across all other stateful tests. The goal of this task is to fix this error so that all stateful tests run successfully without error unless there’s a genuine test failure