Always print a message when the hero level teleports

For much the same reason as the horizontal teleport message: various
forms of level teleportation produce no message indication at all that
you just ended up somewhere else.

src/teleport.c

@@ -1022,6 +1022,7 @@ level_tele()
        call it something, we can't defer until the end of the turn */
     if (u.utotype && !g.context.mon_moving)
         deferred_goto();
+    You("materialize on a different level!");
 }
 
 void