allow unicode scalar

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 82.44%. Comparing base (96a896b) to head (4b3701e).

Files	Patch %	Lines
...ndi/conversion/create_zarr_dataset_from_h5_data.py	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #45 +/- ## ======================================= Coverage 82.44% 82.44% ======================================= Files 25 25 Lines 1692 1692 ======================================= Hits 1395 1395 Misses 297 297 ```

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