Prevents crash from movement (#19287)

Prevents crashing when moving while restrained

code/modules/mob/mob_movement.dm

@@ -236,6 +236,7 @@
 			if(M.pulling == my_mob)
 				if(!M.restrained() && M.stat == 0 && M.canmove && my_mob.Adjacent(M))
 					to_chat(src, span_blue("You're restrained! You can't move!"))
+					my_mob.setMoveCooldown(my_mob.movement_delay()) //Prevent no-cooldown attempts at moving while restrained.
 					return 0
 				else
 					M.stop_pulling()