Fixes foam slipping people standing on tables and racks (#92174)

## About The Pull Request

Closes #92150

## Changelog
🆑
fix: Fixed foam slipping people standing on tables and racks
/🆑

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

@@ -38,7 +38,7 @@
 /obj/effect/particle_effect/fluid/foam/Initialize(mapload)
 	. = ..()
 	if(slippery_foam)
-		AddComponent(/datum/component/slippery, 100)
+		AddComponent(/datum/component/slippery, 100, can_slip_callback = CALLBACK(src, PROC_REF(try_slip)))
 	if(HAS_TRAIT(loc, TRAIT_ELEVATED_TURF))
 		layer = WATER_LEVEL_LAYER
 	create_reagents(1000, REAGENT_HOLDER_INSTANT_REACT)
@@ -137,6 +137,9 @@
 	lifetime -= seconds_per_tick
 	return TRUE
 
+/obj/effect/particle_effect/fluid/foam/proc/try_slip(mob/living/slipper, mob/living/slippee)
+	return !HAS_TRAIT(slippee, TRAIT_MOB_ELEVATED)
+
 /obj/effect/particle_effect/fluid/foam/spread(seconds_per_tick = 0.2 SECONDS)
 	if(group.total_size > group.target_size)
 		return