ruff

aa341f5e - [ty] Remove `specialize_constrained` from constraint set module (#23677)

[ty] Remove `specialize_constrained` from constraint set module (#23677) I had added `specialize_constrained` as a way to create a `Specialization` of a `GenericContext` from a constraint set. But the new solver in `SpecializationBuilder` does not use it; is generates a list of `Solutions` separately, so that it can combine the constraint set solutions with existing solutions from the old solver. That makes `specialize_constrained` redundant. This PR removes it, to lessen confusion about how we're actually creating specializations from a constraint set.