involuntary squeeze() with vector of vectors.

For many applications one-dimensional vectors that are oriented in a certain direction are essential.
However, when such vectors are wrapped in a ComponentArray, some mechanism seems to squeeze them when stored as a vector of vectors, such that they are now oriented along the first direction. This makes ComponentArray.jl unsuitable for broadcasting operations on its stored vectors.

julia> a= reshape([1,2,3],(1,3)); b=[a,a]; q = ComponentVector(;q = [1,2], qq=b, ww=[1 2;3 4]); size(q.qq[1])
(3,)
julia> size(b[1])
(1, 3)

Start by running the Julia reproducer in the issue, comparing size(q.qq[1]) with size(b[1]) after constructing the ComponentVector. Trace the ComponentVector construction and nested vector handling to determine where the (1, 3) shape is lost. Done means stored vectors retain their original orientation and the broadcasting use case works as described.