Not applying memset on reverse of jl_array_del_end about enzyme.jl

[wsmoses]

this is amazing. and ironically fixed by #626 but didn't get merged from lack of test.

@motabbara swap out the test for this and let's merge?

[wsmoses]

With that fix, we now have:

julia> autodiff(Reverse, f, Active, Duplicated(x, dx))
ERROR: Enzyme execution failed.
Not applying memset on reverse of jl_array_del_end
Stacktrace:
 [1] _deleteend!
   @ ./array.jl:1023
 [2] resize!
   @ ./array.jl:1254
 [3] filter
   @ ./array.jl:2612

Stacktrace:
 [1] throwerr(cstr::Cstring)
   @ Enzyme.Compiler ~/git/Enzyme.jl/src/compiler.jl:2910
 [2] macro expansion
   @ ~/git/Enzyme.jl/src/compiler.jl:9514 [inlined]
 [3] enzyme_call
   @ ~/git/Enzyme.jl/src/compiler.jl:9206 [inlined]
 [4] CombinedAdjointThunk
   @ ~/git/Enzyme.jl/src/compiler.jl:9169 [inlined]
 [5] autodiff(#unused#::EnzymeCore.ReverseMode{false}, f::Const{typeof(f)}, #unused#::Type{Active}, args::Duplicated{Vector{Float64}})
   @ Enzyme ~/git/Enzyme.jl/src/Enzyme.jl:205
 [6] autodiff(::EnzymeCore.ReverseMode{false}, ::typeof(f), ::Type, ::Duplicated{Vector{Float64}})
   @ Enzyme ~/git/Enzyme.jl/src/Enzyme.jl:214
 [7] top-level scope
   @ REPL[5]:1