[fbsync] fix import order for torchvision.prototype.datasets (#4538)

Reviewed By: kazhang

Differential Revision: D31391272

fbshipit-source-id: 093631390dcace3d1e3e21d264f68405399b0743

Author: NicolasHug

torchvision/prototype/datasets/__init__.py

@@ -7,10 +7,9 @@
         "Note that you cannot install it with `pip install torchdata`, since this is another package."
     ) from error
 
-
 from . import decoder, utils
+from ._home import home
 
 # Load this last, since some parts depend on the above being loaded first
-from ._api import register, _list as list, info, load
+from ._api import register, _list as list, info, load  # usort: skip
 from ._folder import from_data_folder, from_image_folder
-from ._home import home