Gives Greys FluoroSulphuric Acid immunity (#15909)

* Fixes Gloves of the North Star exploit.

* Update miscellaneous.dm

* Update miscellaneous.dm

* Create miscellaneous.dm

* Update code/modules/clothing/gloves/miscellaneous.dm

Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>

* Update code/modules/clothing/gloves/miscellaneous.dm

Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>

* commit on 'master'

* commit on 'master'

* master

* 'singularityhammer'

* commit

* adds !isgray to facid

Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>

code/modules/mob/living/carbon/human/species/grey.dm

@@ -81,7 +81,7 @@
 				to_chat(H, "<span class='notice'>A speech translator implant has been installed due to your role on the station.</span>")
 
 /datum/species/grey/handle_reagents(mob/living/carbon/human/H, datum/reagent/R)
-	if(R.id == "sacid")
+	if(R.id == "sacid" || R.id == "facid")
 		H.reagents.remove_reagent(R.id, REAGENTS_METABOLISM)
 		return FALSE
 	if(R.id == "water")

code/modules/reagents/chemistry/reagents/toxins.dm

@@ -334,7 +334,7 @@
 	return ..() | update_flags
 
 /datum/reagent/acid/facid/reaction_mob(mob/living/M, method = REAGENT_TOUCH, volume)
-	if(ishuman(M))
+	if(ishuman(M) && !isgrey(M))
 		var/mob/living/carbon/human/H = M
 		if(method == REAGENT_TOUCH)
 			if(volume > 9)