[MIRROR] Mouse army faction fix (#12127)

Co-authored-by: FluffMedic <109300046+FluffMedic@users.noreply.github.com>

code/__defines/faction.dm

@@ -28,6 +28,7 @@
 #define FACTION_SYNDICATE "syndicate"
 #define FACTION_TECHNOMANCER "technomancer"
 #define FACTION_VAMPIRE "vampire"
+#define FACTION_MOUSE_ARMY "mouse_army"
 
 #define FACTION_CORRUPT "corrupt"
 #define FACTION_HIVEBOT "hivebot"

code/modules/mob/living/simple_mob/subtypes/animal/space/mouse_army.dm

@@ -9,7 +9,7 @@
 	icon_living = "mouse_gray"
 	icon_dead = "mouse_gray_dead"
 	icon_rest = "mouse_gray_sleep"
-	faction = "mouse_army"
+	faction = FACTION_MOUSE_ARMY
 
 	maxHealth = 50
 	health = 50
@@ -366,7 +366,7 @@
 	icon = 'icons/mob/mouse_army.dmi'
 	icon_state = "whisker"
 	wreckage = /obj/structure/loot_pile/mecha/mouse_tank
-	faction = "mouse_army"
+	faction = FACTION_MOUSE_ARMY
 
 	maxHealth = 150
 	armor = list(