Reduce Clumsy Gene's Obnoxious RNG (#19126)

* clumsy rng

* seperate define for this too

* there are very harmful too

* replace with macros

* fixed handling

---------

Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>

code/game/objects/items/devices/flash.dm

@@ -94,7 +94,7 @@
 	return null
 
 /obj/item/flash/proc/clown_check(var/mob/user)
-	if(user && (CLUMSY in user.mutations) && prob(50))
+	if(user && CLUMSY_FAIL_CHANCE(user))
 		to_chat(user, span_warning("\The [src] slips out of your hand."))
 		user.drop_item()
 		return 0

code/game/objects/items/devices/flashlight.dm

@@ -122,7 +122,7 @@
 	add_fingerprint(user)
 	if(on && user.zone_sel.selecting == O_EYES)
 
-		if((CLUMSY in user.mutations) && prob(50))	//too dumb to use flashlight properly
+		if(CLUMSY_FAIL_CHANCE(user))	//too dumb to use flashlight properly
 			return ..()	//just hit them in the head
 
 		var/mob/living/carbon/human/H = M	//mob has protective eyewear

code/game/objects/items/devices/scanners/health.dm

@@ -44,7 +44,7 @@
 
 /obj/item/healthanalyzer/proc/scan_mob(mob/living/M, mob/living/user)
 	var/dat = ""
-	if ((CLUMSY in user.mutations) && prob(50))
+	if (CLUMSY_FAIL_CHANCE(user))
 		user.visible_message(span_warning("\The [user] has analyzed the floor's vitals!"), span_warning("You try to analyze the floor's vitals!"))
 		dat += "Analyzing Results for the floor:<br>"
 		dat += "Overall Status: Healthy<br>"