Fixes plenty instances of 1-tile foam (#71132)

## About The Pull Request
All of these from what i heard were supposed to make all foam with range
"4" but most of these ranges were stupidly big so

Fixes 1 tile foam that was apparently not fixed after the foam refactor
in:
AI Upload Foam Dispensers, with a range of "4"
Hygienebot death, with a range of "2"
Clown cars taking damage, with a range of "4" and 25u of space lube.
(henk)
Clown plasmaman envirosuits extinguishment, with a range of "4" and 15u
of space lube. (hunke)
Soap suicide, with a range of "1"
Emagged cleanbots wetting the floor and making foam, with a range of "2"
Firebots when exposed to an atmos fire, firefighting foam with a range
of "3"

![image](https://user-images.githubusercontent.com/70376633/200168492-640b2517-b747-43cd-b45f-c2168a915d63.png)

## Why It's Good For The Game

Fixes #68441
Makes firebots less ass
Also barely-functional code bad, functional code good

## Changelog
🆑
fix: Fixes 1 tile foam in Foam Dispensers,Clown Cars, Hygiene
Bots,Firebots, Soap Suicide, Emagged cleanbots, and the clown plasmaman
envirosuit
/🆑

code/game/objects/effects/effect_system/fluid_spread/effects_foam.dm

@@ -253,6 +253,9 @@
 		return
 	foaming.adjust_wet_stacks(2)
 
+/// A factory which produces firefighting foam
+/datum/effect_system/fluid_spread/foam/firefighting
+	effect_type = /obj/effect/particle_effect/fluid/foam/firefighting
 
 // Metal foam