Fix infinite loop in _guess_num_chunks_per_axis_shard for 0-dimensional arrays - #4305

Fix infinite loop in _guess_num_chunks_per_axis_shard for 0-dimensional arrays#4305

d-v-b merged 2 commits into

zarr-developers:mainzarr-developers/zarr-python:mainfrom

Tomatokeftes:fix/4304-rank0-shard-hangTomatokeftes/zarr-python:fix/4304-rank0-shard-hangCopy head branch name to clipboard