Test multi-mod interactions with Context.Wrap and Override

[AndreLouisIssa]

Since Override (and Decorate.Bottom and Wrap.Bottom) traverse to the bottom of the decorator stack, that might bypass the isolation of a context (needs to be tested).

e.g.

ModUtil.Path.Override("A", function() return "A1" end)
ModUtil.Path.Wrap("A", function(base) return base() .. "2" end)
ModUtil.Path.Context.Wrap("B", function()
    ModUtil.Path.Override("A", function() return "A3" end)
end)

print(A()) -- A12
B()
print(A()) -- expect A12, failure A32