Changing the use from ASSERT_EQ to ASSERT_FLOAT_EQ on nn_utils test. (#83693)
Changing the use from ASSERT_EQ to ASSERT_FLOAT_EQ on nn_utils.cpp:ClipGradNorm as this is the proper way to compare equality between floating point values. This avoids `test_api` ClipGradNorm failing for WoA.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/83693
Approved by: https://github.com/ngimel, https://github.com/kit1980
