Fixed potential brimhaven exploit

Server/src/main/kotlin/rs09/game/interaction/region/dungeons/brimhaven/BrimhavenUtils.kt

@@ -67,11 +67,15 @@ object BrimhavenUtils {
                 }
                 if (stage == 6) {
                     player.achievementDiaryManager.finishTask(player, DiaryType.KARAMJA, 1, 15)
-                    ContentAPI.clearLogoutListener(player, "steppingstone")
                 }
                 AgilityHandler.forceWalk(player, -1, l, l.transform(direction), Animation.create(769), 10, 0.0, null)
                 return stage == 6
             }
+
+            override fun stop() {
+                ContentAPI.clearLogoutListener(player, "steppingstone")
+                super.stop()
+            }
         })
     }