Light sensitivity tweaks (#22302)

Having played with it for a couple weeks, made additional changes to
light sensitivity effects. Less frequent and less sensitive, alongside
tweak to cigarette lights (the only common light source that seemed to
have an outsized impact on turf corner light calcs).

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

@@ -1287,7 +1287,7 @@
 		if(HAS_TRAIT(src, TRAIT_ORIGIN_LIGHT_SENSITIVE))
 			T = loc
 			// From testing, this generally leaves several minutes between each message.
-			if(prob(1) && T.get_lumcount() > 0.8)
+			if(prob(0.5) && T.get_lumcount() > 0.95)
 				var/mob/living/carbon/human/self = src
 
 				// If you have this trait, your default flash protection is -1; check for ANY protection.
@@ -1308,6 +1308,15 @@
 							"The bright light leaves your vision strained."
 						)
 						to_chat(src, SPAN_WARNING(pick(eye_sensitivity_messages)))
+						if(prob(20))
+							// If your eyes are covered, people can see you squinting.
+							var/list/protection = list(self.head, self.glasses, self.wear_mask)
+							var/eyes_covered = FALSE
+							for(var/obj/item/I in protection)
+								if(I?.body_parts_covered & EYES)
+									eyes_covered = TRUE
+							if(!eyes_covered)
+								self.visible_message("[self] squints in discomfort.")
 
 /mob/living/carbon/human/proc/handle_changeling()
 	if(mind)