Add "Shape" option to (Custom Distance) for Light objects (EEVEE)

Right now all the lights except for sun have the option to set a custom distance of how far the light can go.

Issue is that no matter what shape the light source is: square, rectangle, disk, ellipse; The falloff is always a sphere.

Here's a scene where I NEED custom distance shapes. I have this large spot light in a shape of a disk, and I want it to light brighten the floor up to that long white rectangle, not any farther. I've cranked up the power but it's going to far now so I turn on custom distance but it doesn't work in my particular scene cause its in the shape of a cyilnder. So Ideally I could then select a cylinder as my custom shape for the custom distance and it would fix my problem. But no. I have to now use meshes to block the light instead.