Revert "[add_dark_flat_nx_file] avoid loading the data to get dimensions"

This reverts commit 6c494438.

nxtomomill/utils.py

@@ -300,19 +300,10 @@ def add_dark_flat_nx_file(
         n_frames_to_insert = 1
         if isinstance(data, numpy.ndarray) and data.ndim == 3:
             n_frames_to_insert = data.shape[0]
-        elif isinstance(data, DataUrl):
-            with HDF5File(data.file_path(), mode="r") as h5s:
-                if data.data_path() not in h5s:
-                    raise KeyError(
-                        "Path given ({}) is not in {}".format(
-                            data.data_path(), data.file_path
-                        )
-                    )
-                data_node = h5s[data.data_path()]
-                if data_node.ndim is 3:
-                    n_frames_to_insert = data_node.shape[0]
         else:
-            raise TypeError("{} as input is not managed".format(type(data)))
+            raw_data = get_data(data)
+            if raw_data.ndim is 3:
+                n_frames_to_insert = raw_data.shape[0]
 
         if logger is not None:
             logger.info(