efahnestock

Deepcopy of torchvision.models.feature_extraction.DualGraphModule breaks eval

1

### 🐛 Describe the bug It appears that creating a deepcopy of a [DualGraphModule](https://github.com/pytorch/vision/blob/838ad6ccf6ef7032485671a54c1570876e366dc5/torchvision/models/feature_extraction.py#L268) breaks the ability to call `.eval()` on it. Minimal example: ```python import torchvision from torchvision.models import...