Flesh to stone no longer makes you immune to bleeding, refactors bleedsuppress into a trait (#56078)

Being hit by the Flesh to Stone makes you bleed immune to prevent you from getting petrified while bleeding, and bleeding out while turned into stone. However, it doesn't make you vulnerable when you get unpetrified. This is a bug. This also makes bleedsuppress into a trait, as both is broken and should be a trait.

code/game/objects/structures/petrified_statue.dm

@@ -60,6 +60,7 @@
 		petrified_mob.status_flags &= ~GODMODE
 		petrified_mob.forceMove(loc)
 		REMOVE_TRAIT(petrified_mob, TRAIT_MUTE, STATUE_MUTE)
+		REMOVE_TRAIT(petrified_mob, TRAIT_NOBLEED, MAGIC_TRAIT)
 		petrified_mob.take_overall_damage((petrified_mob.health - obj_integrity + 100)) //any new damage the statue incurred is transfered to the mob
 		petrified_mob.faction -= "mimic"
 		petrified_mob = null
@@ -80,7 +81,7 @@
 		return FALSE
 	var/obj/structure/statue/petrified/S = new(loc, src, statue_timer)
 	S.name = "statue of [name]"
-	bleedsuppress = 1
+	ADD_TRAIT(src, TRAIT_NOBLEED, MAGIC_TRAIT)
 	S.copy_overlays(src)
 	var/newcolor = list(rgb(77,77,77), rgb(150,150,150), rgb(28,28,28), rgb(0,0,0))
 	S.add_atom_colour(newcolor, FIXED_COLOUR_PRIORITY)