Make config param optional in `init_array`

[dstansby]

Here:

zarr-python/src/zarr/core/array.py

Line 4142 in 9d97b24

config: ArrayConfigLike | None,

I think it would make sense to make config optional, defaulting to None.

[RitwikGupta-0501]

Hi!

I'm new to contributing and would like to contribute with this issue? Is this already taken up?