Try reintroducing dungeon LBM

It doesn't catch 100% of everything, but presumably
it catches at least some things, and has little
marginal cost on top of the ABM alone.

Players have been remarking about the fact that
dungeons sometimes initialize right before their
eyes.  LBMs SHOULD be able to fire outside of the
ABM active range, giving us a chance to catch these
a little earlier before the player is close enough to
notice...?

mods/nc_terrain/dungeon.lua

@@ -77,6 +77,13 @@ end
 ------------------------------------------------------------------------
 -- DUNGEON MODIFIER HOOKS
 
+nodecore.register_lbm({
+		name = modname .. ":dungeons",
+		run_at_every_load = true,
+		nodenames = {"group:dungeon_mapgen"},
+		action = dungeonprocess
+	})
+
 minetest.register_abm({
 		label = modname .. " dungeon cleanup",
 		interval = 1,