pass kwargs along maybeview and dotview

[oxinabox]

This is re #31729

[oxinabox]

I guess to test this, the following would work?

struct DummyNamedDimArray<:AbstractArray end
Base.getindex(::DummyNamedDimArray; x) = x
@test Base.dotview(DummyNamedDimArray(); x=5) == 5

[mbauman]

Ok, I know I'm the one that put you up to this (and thanks for doing it!), but I'm not as certain it's a good idea anymore. The key thing for dotview is that it distinguishes between the scalar and nonscalar cases in an expression like A[X] .= Y.

If X is a single location like 5, then we broadcast Y into the object stored at A[5]. If, however, X is a collection of locations like 1:5, then we broadcast Y across A at those locations. In the case of a kwarg, we don't really know a priori which behavior to use.

For example, in your use-case, we'd want A[x=1:5] .= ... to use a view on the LHS and A[x=5] .= ... to use an unwrapped value.

Edit: I guess we could do some sort of pseudo-dispatch on the kwargs, but I don't think we really know enough about what the kwargs might mean to do that.

[oxinabox]

@mbauman:
We should play around with this and get it sorted on NamedDims.jl
and then return to this PR then.
NamedDims.jl can be fully hyjacking dotview anyway, and probably will continue to since it needs to be 1.0 compatible.

If you want to try that out and make some issues, that would be very appreciated.