* Fix hammer lights not casting shadows and having weird lighting after they became components
* Hammer lights have cone mask from the lightmap itself, we can take advantage of that and tighten the cone for sharper shadows
* Depth buffer bias should track cone width and map resolution, not light radius
A range-5000 light could get ~25x bias and heavy peter-panning, same for overly-wide spots
* Hammer lights have no concept of "hardness" - let's make them reasonably sharp by default a bit like previous behaviour
* Tweaks
* format
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