ao migration: fix broken import
Summary:
https://github.com/pytorch/pytorch/pull/94170 broke some Meta-only tests
because it broke the following syntax:
```
import torch.nn.intrinsic
_ = torch.nn.intrinsic.quantized.dynamic.*
```
This broke with the name change because the `ao` folder is currently
doing lazy import loading, but the original folders are not.
For now, just unbreak the folders needed for the tests to pass.
We will follow-up with ensuring this doesn't break for other folders
in a future PR.
Test plan:
```
python test/test_quantization.py -k AOMigrationNNIntrinsic.test_modules_no_import_nn_intrinsic_quantized_dynamic
```
