Minor improvements.

Change List

• Reduces the number of network requests by passing kind parameter to zarrOpen, which is obtained from store.contents() when consolidated metadata is present. Otherwise, zarrita needs to make extra requests as it does not know if we want to open an array or a group. There is still an edge case when arrays lack attrs altogether, and zarrita still makes network requests in these cases as the attrs are not found in the consolidated metadata. I have left a TODO statement about this but it is not currently a major issue as it only results in several extra requests.
• Enables reading stores that contain recarrays by wrapping zarrOpen in try-catch. Zarrita does not support recarrays as it currently assumes array dtype will always be a string in coerce_dtype. For recarrays the dtype is an array https://github.com/manzt/zarrita.js/blob/23abb3bee9094aabbe60985626caef2802360963/packages/zarrita/src/util.ts#L129

Checklist

• Have tested PR with one or more demo configurations
• Documentation added, updated, or not applicable