Fix SetMapBridge with complex type

[blegat]

The bridges don't support dealing with a function that is not of coefficient type T. So with ComplexF64, we had these errors but actually we get the same with Int for instance. So we might as well check it with MOI.is_coefficient_type

Before the PR

julia> model = MOI.instantiate(MOI.Utilities.Model{Float64}, with_bridge_type=Float64)

julia> MOI.supports_constraint(model, MOI.VectorAffineFunction{Int}, MOI.Nonnegatives)
ERROR: MethodError: no method matching promote_operation(::typeof(-), ::Type{Float64}, ::Type{MathOptInterface.VectorAffineFunction{Int64}})
The function `promote_operation` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  promote_operation(::typeof(-), ::Type{T}, ::Type{MathOptInterface.VectorNonlinearFunction}) where T<:Number
   @ MathOptInterface ~/.julia/dev/MathOptInterface/src/Utilities/promote_operation.jl:177
  promote_operation(::typeof(-), ::Type{T}, ::Type{MathOptInterface.VectorOfVariables}) where T<:Number
   @ MathOptInterface ~/.julia/dev/MathOptInterface/src/Utilities/promote_operation.jl:169
  promote_operation(::typeof(-), ::Type{T}, ::Type{F}) where {T, F<:Union{AbstractVector{T}, MathOptInterface.ScalarAffineFunction{T}, MathOptInterface.ScalarNonlinearFunction, MathOptInterface.ScalarQuadraticFunction{T}, MathOptInterface.VectorAffineFunction{T}, MathOptInterface.VectorQuadraticFunction{T}, T}}
   @ MathOptInterface ~/.julia/dev/MathOptInterface/src/Utilities/promote_operation.jl:142
  ...

Stacktrace:
 [1] concrete_bridge_type(::Type{…}, G::Type{…}, ::Type{…})
   @ MathOptInterface.Bridges.Constraint ~/.julia/dev/MathOptInterface/src/Bridges/Constraint/bridges/FlipSignBridge.jl:238
 [2] node(b::MathOptInterface.Bridges.LazyBridgeOptimizer{…}, F::Type{…}, S::Type{…})
   @ MathOptInterface.Bridges ~/.julia/dev/MathOptInterface/src/Bridges/lazy_bridge_optimizer.jl:327
 [3] bridge_index
   @ ~/.julia/dev/MathOptInterface/src/Bridges/lazy_bridge_optimizer.jl:464 [inlined]
 [4] supports_bridging_constraint
   @ ~/.julia/dev/MathOptInterface/src/Bridges/lazy_bridge_optimizer.jl:491 [inlined]
 [5] supports_constraint(b::MathOptInterface.Bridges.LazyBridgeOptimizer{…}, F::Type{…}, S::Type{…})
   @ MathOptInterface.Bridges ~/.julia/dev/MathOptInterface/src/Bridges/bridge_optimizer.jl:1837
 [6] top-level scope
   @ REPL[22]:1
Some type information was truncated. Use `show(err)` to see complete types.

After the PR:

julia> MOI.supports_constraint(model, MOI.VectorAffineFunction{Int}, MOI.Nonnegatives)
false

Needed for jump-dev/SeDuMi.jl#28

[odow]

Can we test this somehow?