Ups the timer SS priority (#52405)

A lot of issues happen when the tick overruns due to less important and more expensive subsystems. If timer is not ran or breaks, a lot of stuff breaks.

code/controllers/subsystem/timer.dm

@@ -7,7 +7,7 @@ SUBSYSTEM_DEF(timer)
 	name = "Timer"
 	wait = 1 //SS_TICKER subsystem, so wait is in ticks
 	init_order = INIT_ORDER_TIMER
-
+	priority = FIRE_PRIORITY_TIMER
 	flags = SS_TICKER|SS_NO_INIT
 
 	var/list/datum/timedevent/second_queue = list() //awe, yes, you've had first queue, but what about second queue?