Reenables SHOULD_NOT_SLEEP on initialize (#53378)

code/modules/fields/fields.dm

@@ -16,7 +16,7 @@
 	if(!F.check_variables() && !override_checks)
 		QDEL_NULL(F)
 	if(start_field && (F || override_checks))
-		F.Initialize()
+		F.begin_field()
 	return F
 
 /datum/proximity_monitor/advanced
@@ -82,7 +82,7 @@
 	if(requires_processing)
 		START_PROCESSING(SSfields, src)
 
-/datum/proximity_monitor/advanced/proc/Initialize()
+/datum/proximity_monitor/advanced/proc/begin_field()
 	setup_field()
 	post_setup_field()
 

code/modules/fields/timestop.dm

@@ -33,7 +33,7 @@
 		if(G.summoner && locate(/obj/effect/proc_holder/spell/aoe_turf/timestop) in G.summoner.mind.spell_list) //It would only make sense that a person's stand would also be immune.
 			immune[G] = TRUE
 	if(start)
-		timestop()
+		INVOKE_ASYNC(src, .proc/timestop)
 
 /obj/effect/timestop/Destroy()
 	qdel(chronofield)