Getting shrunk makes your voice small (#82025)

## About The Pull Request

![image](https://github.com/tgstation/tgstation/assets/66640614/83822a60-1324-45f2-9893-4a1628484d03)

![image](https://github.com/tgstation/tgstation/assets/66640614/9c22a846-d1b7-4b78-b773-cbfc1686528f)

![image](https://github.com/tgstation/tgstation/assets/66640614/84779e0c-02d8-4d0c-bbeb-c5bd176c4b6d)

![image](https://github.com/tgstation/tgstation/assets/66640614/90e76a29-8e8b-4a9e-86c5-3183fe8b60ee)


## Why It's Good For The Game
I think it's funny. Plus I like what helium introduced with the small
text, and wanted to add it to more places.

## Changelog
🆑 Tattle
add: Getting shrunk makes you talk small
/🆑

---------

Co-authored-by: tattle <article.disaster@gmail.com>

code/__DEFINES/say.dm

@@ -75,7 +75,7 @@
 #define SPAN_CLOWN "clown"
 #define SPAN_SINGING "singing"
 #define SPAN_TAPE_RECORDER "tape_recorder"
-#define SPAN_HELIUM "small"
+#define SPAN_SMALL_VOICE "small"
 
 //bitflag #defines for return value of the radio() proc.
 /// Makes the message use italics

code/datums/components/shrink.dm

@@ -15,6 +15,7 @@
 	if(isliving(parent_atom))
 		var/mob/living/L = parent_atom
 		ADD_TRAIT(L, TRAIT_UNDENSE, SHRUNKEN_TRAIT)
+		RegisterSignal(L, COMSIG_MOB_SAY, PROC_REF(handle_shrunk_speech))
 		L.add_movespeed_modifier(/datum/movespeed_modifier/shrink_ray)
 		if(iscarbon(L))
 			var/mob/living/carbon/C = L
@@ -30,6 +31,10 @@
 	span_userdanger("Everything grows bigger!"))
 	QDEL_IN(src, shrink_time)
 
+/datum/component/shrink/proc/handle_shrunk_speech(mob/living/little_guy, list/speech_args)
+	SIGNAL_HANDLER
+	speech_args[SPEECH_SPANS] |= SPAN_SMALL_VOICE
+
 /datum/component/shrink/Destroy()
 	var/atom/parent_atom = parent
 	parent_atom.transform = parent_atom.transform.Scale(2,2)
@@ -38,6 +43,7 @@
 		var/mob/living/L = parent_atom
 		L.remove_movespeed_modifier(/datum/movespeed_modifier/shrink_ray)
 		REMOVE_TRAIT(L, TRAIT_UNDENSE, SHRUNKEN_TRAIT)
+		UnregisterSignal(L, COMSIG_MOB_SAY)
 		if(ishuman(L))
 			var/mob/living/carbon/human/H = L
 			H.physiology.damage_resistance += 100

code/modules/surgery/organs/internal/lungs/_lungs.dm

@@ -444,7 +444,7 @@
 /// React to speach while hopped up on the high pitched voice juice
 /obj/item/organ/internal/lungs/proc/handle_helium_speech(mob/living/carbon/breather, list/speech_args)
 	SIGNAL_HANDLER
-	speech_args[SPEECH_SPANS] |= SPAN_HELIUM
+	speech_args[SPEECH_SPANS] |= SPAN_SMALL_VOICE
 
 /// Gain hypernob effects if we have enough of the stuff
 /obj/item/organ/internal/lungs/proc/consume_hypernoblium(mob/living/carbon/breather, datum/gas_mixture/breath, hypernob_pp, old_hypernob_pp)