Fixes a couple more mob-related hard dels + fixes a balloon alert race condition from brimdemon fang (#92498)

## About The Pull Request

Tin, some more hard dels that were found. Additionally there was a
balloon alert meant to display phrases like "Kapow!" "Bam!" etc but it
is runtiming before it can do so because the mob gets deleted before the
balloon alert gets displayed. (solution for these sorts of issues is to
display the balloon alert on the `loc` instead.

## Why It's Good For The Game

Less chug, and a bugfix.

## Changelog

Probably nothing worth mentioning

code/datums/actions/mobs/transform_weapon.dm

@@ -18,10 +18,9 @@
 /datum/action/cooldown/mob_cooldown/transform_weapon/proc/do_transform(atom/target)
 	if(!istype(owner, /mob/living/simple_animal/hostile/megafauna/blood_drunk_miner))
 		return
-	var/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/BDM = owner
-	var/obj/item/melee/cleaving_saw/miner/miner_saw = BDM.miner_saw
-	miner_saw.attack_self(owner)
-	var/saw_open = HAS_TRAIT(miner_saw, TRAIT_TRANSFORM_ACTIVE)
-	BDM.rapid_melee = saw_open ? 3 : 5
-	BDM.icon_state = "miner[saw_open ? "_transformed":""]"
-	BDM.icon_living = "miner[saw_open ? "_transformed":""]"
+	var/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/blood_drunk_miner = owner
+	blood_drunk_miner.miner_saw.attack_self(owner)
+	var/saw_open = HAS_TRAIT(blood_drunk_miner.miner_saw, TRAIT_TRANSFORM_ACTIVE)
+	blood_drunk_miner.rapid_melee = saw_open ? 3 : 5
+	blood_drunk_miner.icon_state = "miner[saw_open ? "_transformed":""]"
+	blood_drunk_miner.icon_living = "miner[saw_open ? "_transformed":""]"

code/modules/mining/equipment/kinetic_crusher/trophies_fauna.dm

@@ -138,7 +138,7 @@
 
 /obj/item/crusher_trophy/brimdemon_fang/on_mark_detonation(mob/living/target, mob/living/user)
 	. = ..()
-	target.balloon_alert_to_viewers("[pick(comic_phrases)]!")
+	target.loc.balloon_alert_to_viewers("[pick(comic_phrases)]!")
 	playsound(target, 'sound/mobs/non-humanoids/brimdemon/brimdemon_crush.ogg', 100)
 
 // Bileworm

code/modules/mob/living/basic/lavaland/brimdemon/brimdemon.dm

@@ -43,6 +43,10 @@
 	beam.Grant(src)
 	ai_controller.set_blackboard_key(BB_TARGETED_ACTION, beam)
 
+/mob/living/basic/mining/brimdemon/Destroy(force)
+	QDEL_NULL(beam)
+	return ..()
+
 /mob/living/basic/mining/brimdemon/RangedAttack(atom/target, modifiers)
 	beam.Trigger(target = target)
 

code/modules/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner.dm

@@ -46,7 +46,6 @@ Difficulty: Medium
 	achievement_type = /datum/award/achievement/boss/blood_miner_kill
 	crusher_achievement_type = /datum/award/achievement/boss/blood_miner_crusher
 	score_achievement_type = /datum/award/score/blood_miner_score
-	var/obj/item/melee/cleaving_saw/miner/miner_saw
 	death_message = "falls to the ground, decaying into glowing particles."
 	death_sound = SFX_BODYFALL
 	footstep_type = FOOTSTEP_MOB_HEAVY
@@ -61,10 +60,13 @@ Difficulty: Medium
 	var/datum/action/cooldown/mob_cooldown/dash_attack/dash_attack
 	/// Transform weapon ability
 	var/datum/action/cooldown/mob_cooldown/transform_weapon/transform_weapon
+	/// Their little saw
+	var/obj/item/melee/cleaving_saw/miner/miner_saw
 
 /mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/Initialize(mapload)
 	. = ..()
 	miner_saw = new(src)
+	RegisterSignal(miner_saw, COMSIG_PREQDELETED, PROC_REF(on_saw_deleted))
 	ADD_TRAIT(src, TRAIT_NO_FLOATING_ANIM, INNATE_TRAIT)
 
 	dash = new /datum/action/cooldown/mob_cooldown/dash
@@ -78,11 +80,20 @@ Difficulty: Medium
 
 	AddComponent(/datum/component/boss_music, 'sound/music/boss/bdm_boss.ogg', 167 SECONDS)
 
-/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/Destroy()
+/// Block deletion of their saw under normal circumstances. It is fused to their hands as far as we're concerned.
+/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/proc/on_saw_deleted(datum/source, force)
+	SIGNAL_HANDLER
+
+	if(!force)
+		return TRUE
+
+/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/Destroy(force)
 	dash = null
 	kinetic_accelerator = null
 	dash_attack = null
 	transform_weapon = null
+	UnregisterSignal(miner_saw, COMSIG_PREQDELETED) // unblock deletion, we are dead.
+	QDEL_NULL(miner_saw)
 	return ..()
 
 /mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/OpenFire()