Fix servant_spawns empty list runtimes (#40872)

A couple things depend on this list being populated to teleport mobs around
towards end game, so removing the spawnpoints just to spread players around at
the very start of the round seems like a pretty blatant oversight.

code/game/gamemodes/clock_cult/clock_cult.dm

@@ -178,13 +178,15 @@ Credit where due:
 	return 1
 
 /datum/game_mode/clockwork_cult/post_setup()
+	var/list/spread_out_spawns = GLOB.servant_spawns.Copy()
 	for(var/S in servants_to_serve)
+		if(!spread_out_spawns.len) //cycle through the list again if we've used all the inital spawnpoints.
+			spread_out_spawns = GLOB.servant_spawns.Copy()
 		var/datum/mind/servant = S
 		log_game("[key_name(servant)] was made an initial servant of Ratvar")
 		var/mob/living/L = servant.current
-		var/turf/T = pick(GLOB.servant_spawns)
+		var/turf/T = pick_n_take(spread_out_spawns)
 		L.forceMove(T)
-		GLOB.servant_spawns -= T
 		greet_servant(L)
 		equip_servant(L)
 		add_servant_of_ratvar(L, TRUE)

code/modules/antagonists/clockcult/clock_scriptures/scripture_drivers.dm

@@ -199,11 +199,7 @@
 
 /datum/clockwork_scripture/abscond/scripture_effects()
 	var/take_pulling = invoker.pulling && isliving(invoker.pulling) && get_clockwork_power(ABSCOND_ABDUCTION_COST)
-	var/turf/T
-	if(GLOB.ark_of_the_clockwork_justiciar)
-		T = get_step(GLOB.ark_of_the_clockwork_justiciar, SOUTH)
-	else
-		T = get_turf(pick(GLOB.servant_spawns))
+	var/turf/T = GLOB.ark_of_the_clockwork_justiciar ? get_step(GLOB.ark_of_the_clockwork_justiciar, SOUTH) : get_turf(pick(GLOB.servant_spawns))
 	invoker.visible_message("<span class='warning'>[invoker] flickers and phases out of existence!</span>", \
 	"<span class='bold sevtug_small'>You feel a dizzying sense of vertigo as you're yanked back to Reebe!</span>")
 	T.visible_message("<span class='warning'>[invoker] flickers and phases into existence!</span>")