Allow for inline_array specification in open_zarr through from_array_kwargs

[hansmohrmann]

This is probably not the best way to do this, but I figured I would start with the simplest way and go from there.

inline_array snakes its way through the codebase all the way to _maybe_chunk where it gets resolved against from_array_kwargs; if you provide it in from_array_kwargs and explicitly to open_dataset, you get @dcherian's error message. So with open_zarr you can't provide it in from_array_kwargs since the default open_dataset value is used (False); this PR just removes it from from_array_kwargs and passes that value to open_dataset.

Pros:

• Doesn't require changing the signature of anything.

Cons:

• open_zarr is now the one place where you can use inline_array in from_array_kwargs, which might lead to some confusion down the line.
• Have tied the default value in open_dataset to open_zarr.

So alternatively, I could modify open_zarr with another inline_array arg.

• [x] Closes #8095

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[hansmohrmann]

@TomNicholas