Missing derivative rule for ptr_to_array & co.

[vchuravy]

julia> function f(a, i, x)
           GC.@preserve a begin
                ptr = pointer(a)
                b = Base.unsafe_wrap(Array, ptr, length(a))
                b[i] = x
           end
           a[i]
       end
f (generic function with 1 method)

julia> autodiff(Forward, f,  Duplicated(zeros(1), zeros(1)), Const(1), Duplicated(1.0, 2.0))
ERROR:
No forward mode derivative found for ijl_ptr_to_array_1d
 at context:   %12 = call nonnull "enzyme_type"="{[-1]:Pointer}" {} addrspace(10)* @ijl_ptr_to_array_1d({} addrspace(10)* noundef addrspacecast ({}* inttoptr (i64 125915773691440 to {}*) to {} addrspace(10)*), i64 %11, i64 %arraylen, i32 noundef 0) #8, !dbg !47

Stacktrace:
 [1] #unsafe_wrap#106
   @ ./pointer.jl:92
 [2] unsafe_wrap
   @ ./pointer.jl:90
 [3] f
   @ ./REPL[7]:4


Stacktrace:
  [1] #unsafe_wrap#106
    @ ./pointer.jl:92 [inlined]
  [2] unsafe_wrap
    @ ./pointer.jl:90 [inlined]
  [3] f
    @ ./REPL[7]:4 [inlined]
  [4] fwddiffejulia_f_949wrap
    @ ./REPL[7]:0
  [5] macro expansion
    @ ~/src/Enzyme/src/compiler.jl:5340 [inlined]
  [6] enzyme_call
    @ ~/src/Enzyme/src/compiler.jl:4878 [inlined]
  [7] ForwardModeThunk
    @ ~/src/Enzyme/src/compiler.jl:4766 [inlined]
  [8] autodiff
    @ ~/src/Enzyme/src/Enzyme.jl:654 [inlined]
  [9] autodiff
    @ ~/src/Enzyme/src/Enzyme.jl:544 [inlined]
 [10] autodiff(::ForwardMode{false, FFIABI, false, false}, ::typeof(f), ::Duplicated{Vector{Float64}}, ::Const{Int64}, ::Duplicated{Float64})
    @ Enzyme ~/src/Enzyme/src/Enzyme.jl:516
 [11] top-level scope
    @ REPL[8]:1