For the cifar10 example calculate delta function issue

[shou123]

🐛 Bug

I debug the cifar10 example. For '''flsim/clients/base_client.py -> delta = self.compute_delta()''' pass the three-parameter "before", "after" and "model_to_save". And '''after=updated_model, model_to_save=updated_model''' And for the compute_delta function, it is return updated_model, it didn't calculate any difference.

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Additional context

[JohnlNguyen]

Hey, can you provide a notebook on how we can reproduce this bug? We have a unit test which tested this function.
https://github.com/facebookresearch/FLSim/blob/main/flsim/clients/tests/test_client.py#L288