Light2D inside Light Occluders should have an option to stay in shadows

[diegomachado]

Hello everyone,

A long time ago I've opened this issue where closed shape light occluders shouldn't be lit when there's a Light2D inside them. There is a minimal reproduction project on the issue for anyone interested.

For my project I've been using light occluders to cast wall shadows with moving lights, but when a light 'enters' a wall it wouldn't make sense for it to be lit, since it's not hollow inside. (hope this makes sense)

I don't know in terms of Godot's architecture what would be the best solution, but it would help me a lot having an option to toggle the behavior of the light when it's inside light occluders.