`inspect` reports incorrect size reported for 2D arrays

[benjeffery]

For example:

/call_genotype                int8     520 bytes   6.38 GiB       1.3e+07        432  15.13 MiB     1 byte              (1070401, 3202, 2)  (10000, 1000, 2)  Blosc(cname='zstd', clevel=7, shuffle=BITSHUFFLE, blocksize=0)  None

This appears to be due to zarr-developers/zarr-python#253

[jeromekelleher]

Right - this probably changed when I went to using the "/" dimension separator.

[benjeffery]

zarr-developers/zarr-python#1815