Fix default memory order arguments

Author: dstansby

src/zarr/core/group.py

@@ -2379,7 +2379,7 @@ def create_array(
         compressor: CompressorLike = "auto",
         serializer: SerializerLike = "auto",
         fill_value: Any | None = 0,
-        order: MemoryOrder | None = "C",
+        order: MemoryOrder | None = None,
         attributes: dict[str, JSON] | None = None,
         chunk_key_encoding: ChunkKeyEncodingLike | None = None,
         dimension_names: DimensionNames = None,
@@ -2773,7 +2773,7 @@ def array(
         compressor: CompressorLike = None,
         serializer: SerializerLike = "auto",
         fill_value: Any | None = 0,
-        order: MemoryOrder | None = "C",
+        order: MemoryOrder | None = None,
         attributes: dict[str, JSON] | None = None,
         chunk_key_encoding: ChunkKeyEncodingLike | None = None,
         dimension_names: DimensionNames = None,