…tive accuracy issue (#2370)

Skip for
`test_nn.py::TestNN.test_batchnorm_3D_train_NCHW_vs_native_mixed_float16`
Test failed on `weight gradient` comparison MIOpen/CuDNN vs Native
batchnorm.

But CPU test `test_batchnorm_3D_train_NCHW_vs_cpu_mixed_float16` passed.
It looks like FP16 Native batchnorm issue.

Failed on MI200/MI300 and V100
It passed somehow on Navi (with enabled MIOpen)

Fixes SWDEV-541024, SWDEV-539171

```
python test_nn.py -v -k test_batchnorm_3D_train_NCHW_vs_native_mixed_float16

test_batchnorm_3D_train_NCHW_vs_native_mixed_float16 (__main__.TestNN) ... skipped '3D float16 NCHW train failed on CUDA and ROCm due to Native batchnorm accuracy issue SWDEV-541024'

OK (skipped=1)
```