At the moment, there is no such feature in Godot. You would have to create your own solution for this problem and I don’t know enough about light rendering to propose a solution to you.
I answered a post similar to this one a few months ago. The conclusion was to simply stick with using additive light blending (see post).
I hope someone has a better answer for you.
Other users have requested a feature for this very use case (see issue).