Fix ArrayLike TypeVar

[mlshapiro]

Description

The ArrayLike TypeVar is not set up correctly and may be hiding underlying type inconsistencies. Our goal here was to create a single type that could handle xr.DataArray and np.ndarray consistently.

It currently works decently well, but we have to use inline ignores in certain circumstances (see # type: ignore[assignment]).

I think the preferred solution is to use np.ndarray everywhere specifying the types we expect in the array.

Details

• Version: 0.35.0
• Module: utils.types
• Reporter: @mlshapiro

Additional Notes

This may require more handling in the basic grid models, like issr, sac, pcr.