Fix over saturated static colored lights

[Rudolph-B]

Fixes #102203

The output of trace_direct_light() was multiplied by a color vector twice resulting in over saturation.

Since penumbra_color is already derived from light_color it shouldn't be necessary to use light_color anymore in the final calculation.

I tested using:

• playble_terrain.zip
• test_lightmap_directional_compress.zip

Both seeme to be fixed:

And

This is the first time I'm diving into lighting, so please double check me.

[clayjohn]

Looks good!

Indeed the light color is now contained within the penumbra_color so this multiplies it twice.

[jcostello]

Tested it locally, colors for static lights looks much better now

[akien-mga]

Thanks!