revert: default destination to orignal list type if None

python/mlx/utils.py

@@ -1,5 +1,5 @@
 # Copyright © 2023 Apple Inc.
-from collections import OrderedDict, defaultdict
+from collections import defaultdict
 from itertools import zip_longest
 from typing import Any, Callable, Dict, List, Optional, Tuple, Union
 
@@ -129,7 +129,7 @@ def tree_flatten(
         # [("0.0.0", 0)]
         print(tree_flatten([[[0]]], prefix=".hello"))
         # [("hello.0.0.0", 0)]
-        tree_flatten({"a": {"b": 1}})
+        tree_flatten({"a": {"b": 1}}, destination=dict())
         {"a.b": 1}
 
     .. note::
@@ -148,7 +148,7 @@ def tree_flatten(
         List[Tuple[str, Any]]: The flat representation of the Python tree.
     """
     if destination is None:
-        destination = OrderedDict()
+        destination = []
 
     def _add_to_destination(k: str, v: Any) -> None:
         key: str = k[1:] if k.startswith(".") else k