Abstract type aliases do not match expected types

For example, `AbstractGPUVecOrMat`:

```julia
julia> LinearAlgebra.Adjoint{Float64, Matrix{Float64}} <: AbstractVecOrMat
true

julia> LinearAlgebra.Adjoint{Float64, CuMatrix{Float64}} <: GPUArrays.AbstractGPUVecOrMat
false
```

... because `Adjoint` is `<: AbstractArray` but not `<: AbstractGPUArray`. This is bad, because it breaks a bunch of generic code, e.g., https://github.com/JuliaLang/julia/pull/53611#issuecomment-2045278635.

I guess this is https://github.com/JuliaLang/julia/issues/51910, however we probably need a different fix in the short term.

Start by reading the AbstractGPUVecOrMat and AbstractGPUArray behavior shown in the issue, then review Julia issue #51910 and the linked Julia pull request discussion. Determine a short-term fix for the mismatch involving LinearAlgebra.Adjoint and verify that the affected generic code recognizes the expected types.

Written by the indexing model from the issue text.