fix(startower): fix level up logic

src/main/java/emu/nebula/data/resources/StarTowerFloorExpDef.java

@@ -7,6 +7,7 @@ import lombok.Getter;
 @Getter
 @ResourceType(name = "StarTowerFloorExp.json")
 public class StarTowerFloorExpDef extends BaseDef {
+    private int Id;
     private int StarTowerId;
     private int Stage;
     private int NormalExp;
@@ -16,6 +17,6 @@ public class StarTowerFloorExpDef extends BaseDef {
     
     @Override
     public int getId() {
-        return StarTowerId;
+        return Id;
     }
 }