Derivatives do not work with non-float types?

E.g. this works fine

julia> derivative(DiffractorForwardBackend(), (a, b) -> sin(a) * cos(b), 1.0, 1.0)

but not this

julia> derivative(DiffractorForwardBackend(), (a, b) -> sin(a) * cos(b), 1, 1)
ERROR: MethodError: no method matching Diffractor.Jet(::Int64, ::Float64, ::Tuple{Float64})

Closest candidates are:
  Diffractor.Jet(::T, ::T, ::Tuple{Vararg{T, N}}) where {T, N}
   @ Diffractor ~/.julia/packages/Diffractor/vzpvE/src/jet.jl:19

Stacktrace:
  [1] njet(::Val{1}, ::typeof(sin), x₀::Int64)
    @ Diffractor ~/.julia/packages/Diffractor/vzpvE/src/higher_fwd_rules.jl:7
  [2] (::Diffractor.∂☆{1})(fb::ZeroBundle{1, typeof(sin)}, x::Diffractor.TangentBundle{1, Int64, Diffractor.TaylorTangent{…}})

and not this

julia> derivative(DiffractorForwardBackend(), (a, b) -> sin(a) * cos(b), π, 1.0)
ERROR: MethodError: no method matching Diffractor.Jet(::Irrational{:π}, ::Float64, ::Tuple{Float64})

Closest candidates are:
  Diffractor.Jet(::T, ::T, ::Tuple{Vararg{T, N}}) where {T, N}
   @ Diffractor ~/.julia/packages/Diffractor/vzpvE/src/jet.jl:19

Stacktrace:
  [1] njet(::Val{1}, ::typeof(sin), x₀::Irrational{:π})

julia> versioninfo()
Julia Version 1.10.0-beta1
Commit 6616549950e (2023-07-25 17:43 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin22.4.0)
  CPU: 12 × Intel(R) Core(TM) i7-8850H CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, skylake)
  Threads: 1 on 12 virtual cores

(jl_8k1XbP) pkg> st
Status `/private/var/folders/86/jlqr7cg52h3dd15zrj_145sr0000gn/T/jl_8k1XbP/Project.toml`
  [c29ec348] AbstractDifferentiation v0.5.2
  [9f5e2b26] Diffractor v0.2.1

Reproduce the integer and π cases from the report, then inspect src/jet.jl and src/higher_fwd_rules.jl, where the stack traces identify the failing Jet construction and njet call. Done means the reported non-float inputs work with the forward backend without the shown MethodError.