[DataPipe] Fixing fsspec DataPipe to be compatible with new version o…

…f fsspec

ghstack-source-id: fa91e4dec9c48f7c5057a66e73b1bc6eb702ec93
Pull Request resolved: #957

torchdata/datapipes/iter/load/fsspec.py

@@ -87,7 +87,7 @@ def __iter__(self) -> Iterator[str]:
             if fs.isfile(path):
                 yield root
             else:
-                for file_name in fs.ls(path):
+                for file_name in fs.ls(path, detail=False):  # Ensure it returns List[str], not List[Dict]
                     if not match_masks(file_name, self.masks):
                         continue