`frule`s for `one` are ambiguous

[MasonProtter]

  MethodError: frule(::Tuple{ZeroTangent, Float64}, ::typeof(one), ::Float64) is ambiguous.
  
  Candidates:
    frule(::Tuple, ::typeof(one), var"1277")
      @ ChainRules ~/.julia/packages/ChainRules/pEOSw/src/rulesets/Base/nondiff.jl:336
    frule(::Any, ::typeof(one), x::Number)
      @ ChainRules ~/.julia/packages/ChainRules/pEOSw/src/rulesets/Base/base.jl:6

  Possible fix, define
    frule(::Tuple, ::typeof(one), ::Number

These methods come from

@non_differentiable one(::Any)

and

@scalar_rule one(x) ZeroTangent()

respectively. It seems like either @non_differentiable should not use a ::Tuple type restriction, or @scalar_rule should add a ::Tuple type restriction.