Fixes malf AI destroy rcds power not fully exploding Mech RCDs (#94164)

## About The Pull Request

Malf AI blow rcds didnt work right on mech rcd module, because the
module isn't an RCD and simply holds an internal real rcd. This led to
the rcd "blowing" but remaining intact, just useless as its internal rcd
was gone. This modifies the exosuit variant internal RCD's detonation
proc such that it properly destroys the fake rcd shell.

## Why It's Good For The Game

fixes #93921

## Changelog
🆑

fix: Malf AI "Destroy RCDs" power now properly destroys mech RCDs

/🆑

code/game/objects/items/rcd/RCD.dm

@@ -610,6 +610,23 @@
 		return gundam.use_energy(amount * MASS_TO_ENERGY)
 	return TRUE
 
+/obj/item/construction/rcd/exosuit/detonate_pulse()
+	var/obj/item/mecha_parts/mecha_equipment/rcd/ourshell = loc
+	if(!istype(ourshell))
+		return
+	ourshell.audible_message(span_danger("<b>[ourshell] begins to vibrate and buzz loudly!</b>"), \
+	span_danger("<b>[ourshell] begins vibrating violently!</b>"))
+	// 5 seconds to get rid of it
+	addtimer(CALLBACK(src, PROC_REF(detonate_pulse_explode)), 5 SECONDS)
+
+/obj/item/construction/rcd/exosuit/detonate_pulse_explode()
+	var/obj/item/mecha_parts/mecha_equipment/rcd/ourshell = loc
+	explosion(ourshell, light_impact_range = 3, flame_range = 1, flash_range = 1)
+	if(owner)
+		ourshell.detach()
+	qdel(ourshell)
+
+
 #undef MASS_TO_ENERGY
 
 #undef FREQUENT_USE_DEBUFF_MULTIPLIER

code/modules/antagonists/malf_ai/malf_ai_modules.dm

@@ -505,10 +505,11 @@ GLOBAL_LIST_INIT(malf_modules, subtypesof(/datum/ai_module/malf))
 	cooldown_period = 10 SECONDS
 
 /datum/action/innate/ai/destroy_rcds/Activate()
-	for(var/I in GLOB.rcd_list)
-		if(!istype(I, /obj/item/construction/rcd/borg)) //Ensures that cyborg RCDs are spared.
-			var/obj/item/construction/rcd/RCD = I
-			RCD.detonate_pulse()
+	for(var/potential_rcd in GLOB.rcd_list)
+		if(istype(potential_rcd, /obj/item/construction/rcd/borg)) //Ensures that cyborg RCDs are spared.
+			continue
+		var/obj/item/construction/rcd/definite_rcd = potential_rcd
+		definite_rcd.detonate_pulse()
 	to_chat(owner, span_danger("RCD detonation pulse emitted."))
 	owner.playsound_local(owner, 'sound/machines/beep/twobeep.ogg', 50, 0)