fix diverged signatures

Author: d-v-b

src/zarr/api/asynchronous.py

@@ -863,7 +863,7 @@ async def create(
     chunks: ChunkCoords | int | bool | None = None,
     dtype: ZDTypeLike | None = None,
     compressor: CompressorLike = "auto",
-    fill_value: Any | None = 0,  # TODO: need type
+    fill_value: Any | None = None,  # TODO: need type
     order: MemoryOrder | None = None,
     store: str | StoreLike | None = None,
     synchronizer: Any | None = None,

src/zarr/core/group.py

@@ -71,6 +71,7 @@
     from zarr.core.buffer import Buffer, BufferPrototype
     from zarr.core.chunk_key_encodings import ChunkKeyEncodingLike
     from zarr.core.common import MemoryOrder
+    from zarr.core.dtype import ZDTypeLike
 
 logger = logging.getLogger("zarr.group")
 
@@ -1000,7 +1001,7 @@ async def create_array(
         name: str,
         *,
         shape: ShapeLike | None = None,
-        dtype: npt.DTypeLike | None = None,
+        dtype: ZDTypeLike | None = None,
         data: np.ndarray[Any, np.dtype[Any]] | None = None,
         chunks: ChunkCoords | Literal["auto"] = "auto",
         shards: ShardsLike | None = None,
@@ -2421,7 +2422,7 @@ def create_array(
         name: str,
         *,
         shape: ShapeLike | None = None,
-        dtype: npt.DTypeLike | None = None,
+        dtype: ZDTypeLike | None = None,
         data: np.ndarray[Any, np.dtype[Any]] | None = None,
         chunks: ChunkCoords | Literal["auto"] = "auto",
         shards: ShardsLike | None = None,