The new vcat makes other packages vcat ambiguous

[prbzrg]

the vcat in v1.10 is breaking some packages.

JuliaDiff/ReverseDiff.jl#242

jonniedie/ComponentArrays.jl#222

[prbzrg]

I found the issue:
JuliaSparse/SparseArrays.jl#431
but let's keep this issue open until that gets fix.

[vtjnash]

Currently the only permitted (non-type-pirating) methods are to overload the first argument with a custom type or to overload for non-Array types. Current Base claims ownership of that set of method signatures, and SparseArrays even already pirates it so that nobody else can do so. There is an old issue here about making it permitted to add other overloads, but no one has tried to tackle that.

[vtjnash]

This should be re-opened on the SparseArrays repo, since the offending pirating method is added there.