Monsters should drop items in world (#373)

* Monsters should drop items in world

fix the typo introduced in https://github.com/Grasscutters/Grasscutter/pull/366/commits/f1934c3a47d6c7ef888581bcf7f361d063154215

* Determine whether in dungeon scene

src/main/java/emu/grasscutter/game/world/Scene.java

@@ -375,7 +375,7 @@ public class Scene {
 		this.broadcastPacket(new PacketLifeStateChangeNotify(attackerId, target, LifeState.LIFE_DEAD));
 
 		// Reward drop
-		if (target instanceof EntityMonster && this.getSceneType() != SceneType.SCENE_WORLD) {
+		if (target instanceof EntityMonster && this.getSceneType() != SceneType.SCENE_DUNGEON) {
 			getWorld().getServer().getDropManager().callDrop((EntityMonster) target);
 		}