do not pass as backend, use for chunking

Author: Miguel Jimenez-Urias

xarray/backends/api.py

@@ -474,6 +474,7 @@ def maybe_decode_store(store, lock=False):
         if engine == 'zarr':
             # on ZarrStore, mode='r', synchronizer=None, group=None,
             # consolidated=False.
+            overwrite_encoded_chunks = backend_kwargs.pop("overwrite_encoded_chunks", None)
             store = backends.ZarrStore.open_group(
                 filename_or_obj,
                 group=group,
@@ -510,6 +511,7 @@ def maybe_decode_store(store, lock=False):
         elif engine == 'zarr':
             # on ZarrStore, mode='r', synchronizer=None, group=None,
             # consolidated=False.
+            overwrite_encoded_chunks = backend_kwargs.pop("overwrite_encoded_chunks", None)
             store = backends.ZarrStore.open_group(
                 filename_or_obj,
                 group=group,