40mm grenades deal melee damage

[Illuminated1]

---- Testmerges: ----
aeb3ec4a3760999325514de8e246848b46d31112

---- Reproduction: ----

After briefly testing in the thunderdome, I have discovered that 40mm grenades deal damage which isn't reduced by 'Bomb' armor, but is instead reduced by melee armor. I'm not aware enough to know what's causing this, but I can resolutely say that bomb armor does not reduce the damage from the explosion.

To reproduce:

Spawn in 40mm grenade launcher, grab 40mm grenades, shoot at a target and examine the damages. There's a direct relation to how melee armor reduces the damage, whereas bomb armor does not.

---- Additional context: ----

There's a strong possibility other grenades and explosives may be having the same issue, so explosives in general might need a review at some point.

[Tk420634]

Working as intended last I checked. Bomb isn't a damage type we continue to support but I'll check with Dan later to be sure.