Fixes some overlay screwery on death and revival (#15192)

* Toggles fullscreens off/on on death/revival instead of deleting them

Fixes a lot of issues regarding fullscreens (vulpkanin NV/welding shield
overlay vanishing, crit overlay not persisting on defib)

* Restores blind effect when defibrillated back to life

Fixes issue where the blind overlay wouldn't appear
when defibrillated, even though the patient is
unconscious/blind

code/game/objects/items/weapons/defib.dm

@@ -428,8 +428,8 @@
 						H.adjustBruteLoss(tobehealed)
 						user.visible_message("<span class='boldnotice'>[defib] pings: Resuscitation successful.</span>")
 						playsound(get_turf(src), 'sound/machines/defib_success.ogg', 50, 0)
-						H.update_revive(FALSE)
-						H.KnockOut(FALSE)
+						H.update_revive()
+						H.KnockOut()
 						H.Paralyse(5)
 						H.emote("gasp")
 						if(tplus > tloss)

code/modules/mob/living/carbon/human/death.dm

@@ -108,7 +108,7 @@
 	if(SSticker && SSticker.mode)
 		SSblackbox.ReportDeath(src)
 
-/mob/living/carbon/human/update_revive()
+/mob/living/carbon/human/update_revive(updating)
 	. = ..()
 	if(. && healthdoll)
 		// We're alive again, so re-build the entire healthdoll

code/modules/mob/living/death.dm

@@ -67,7 +67,7 @@
 	if(mind && suiciding)
 		mind.suicided = TRUE
 	reset_perspective(null)
-	clear_fullscreens()
+	hud_used?.reload_fullscreen()
 	update_sight()
 	update_action_buttons_icon()
 

code/modules/mob/living/stat_states.dm

@@ -61,6 +61,7 @@
 		update_blind_effects()
 		update_sight()
 		updatehealth("update revive")
+		hud_used?.reload_fullscreen()
 
 	SEND_SIGNAL(src, COMSIG_LIVING_REVIVE, updating)
 	for(var/s in ownedSoullinks)