Remove assertEqualIgnoreType from test_pooling (#85112)
Fix TODOs related to https://github.com/pytorch/pytorch/issues/38095 in test_pooling.py.
This PR correctly casts the expected outputs to satisfy the asserts. If you'd prefer feeding `exact_dtype=False` as an argument instead I can update accordingly.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/85112
Approved by: https://github.com/kit1980
