Update py/ngff_zarr/to_ngff_zarr.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: thewtex

py/ngff_zarr/to_ngff_zarr.py

@@ -552,10 +552,11 @@ def _handle_large_array_writing(
     codecs_kwargs = {}
 
     if sharding_kwargs:
-        if "_shard_shape" in sharding_kwargs:
+        sharding_kwargs_copy = sharding_kwargs.copy()
+        if "_shard_shape" in sharding_kwargs_copy:
             # For Zarr v3, configure sharding as a codec only
-            shard_shape = sharding_kwargs.pop("_shard_shape")
-            internal_chunk_shape = sharding_kwargs.get(
+            shard_shape = sharding_kwargs_copy.pop("_shard_shape")
+            internal_chunk_shape = sharding_kwargs_copy.get(
                 "chunk_shape"
             )  # This is the inner chunk shape