Allow SetMapBridge to use bridge value

[blegat]

When I decided that these functions would only depend on the type, it was for consistency for map_function because map_function clearly cannot depend on anything else given that it is used in bridge_constraint. However, you could also have a bridge that implements its own bridge_constraint, storing extra information then in the bridge to be able to implement inverse_map_function, etc... This is the case of the Sum-of-Squares bridge.

Needed for jump-dev/SumOfSquares.jl#355

[blegat]

For map_function, there are two cases:

1. The bridge can implement bridge_constraint and map_function(::AbstractBridge, ...) in which case in case the map depends on values stored in the bridge. map_function is used for setting the ConstraintPrimalStart so actually is not a huge priority to implement it
2. The bridge implement map_function(::Type, ...) in which case the default fallback for bridge_constraint is enough.
   Since the second cases is useful as well, we shouldn't say map_function(::Type, ...) is legacy even if for the other ones I wrote in the docstring that they were legacy 🤔

[odow]

I don't understand this comment. Variable.bridge_constraint does not exist.

[odow]

Do you mean

MathOptInterface.jl/src/Bridges/Constraint/set_map.jl

Lines 37 to 45 in 193aec6

	function bridge_constraint(
	BT::Type{<:MultiSetMapBridge{T,S1,G}},
	model::MOI.ModelLike,
	func::G,
	set::S1,
	) where {T,S1,G}
	mapped_func = MOI.Bridges.map_function(BT, func)
	mapped_set = MOI.Bridges.map_set(BT, set)
	constraint = MOI.add_constraint(model, mapped_func, mapped_set)

[odow]

I just removed the comment