Unstucks robot mobs from permanent sprint mode. (#12389)

code/modules/mob/living/silicon/robot/robot_defines.dm

@@ -9,6 +9,8 @@
 	maxHealth = 100
 	health = 100
 
+	combat_flags = COMBAT_FLAGS_DEFAULT
+
 	var/custom_name = ""
 	var/braintype = "Cyborg"
 	var/obj/item/robot_suit/robot_suit = null //Used for deconstruction to remember what the borg was constructed out of..