Update ForNet.py

test imagenet access in _split_generators

ForNet.py

@@ -1434,6 +1434,9 @@ class ForNet(datasets.GeneratorBasedBuilder):
         )
 
     def _split_generators(self, dl_manager: datasets.DownloadManager):
+        # test if we have access to ILSVRC/imagenet-1k
+        _ = datasets.load_dataset("ILSVRC/imagenet-1k", split="train", trust_remote_code=True)
+
         urls_to_download = _CONST_URLS + _PATCH_URLS
         dl_paths = dl_manager.download(urls_to_download)