Before this, we unconditionally used the largest OuterRadius of all actors inside a mod for overscanning of blockable projectiles.
However, in many mods the only blockable actors are 1-cell walls, and even if there are gates like in TS, they usually aren't the largest actors in terms of hit-shape.
So this measure should save a bit of performance by reducing the overscan radius of blockable projectiles, especially in mods where walls are the only blocking actors.
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