Several fixes for the attribute order

tests/resources/Entity5.js

@@ -1,4 +1,5 @@
 import AttributeInfo from "../../js/entity/AttributeInfo.js"
+import IntegerEntity from "../../js/entity/IntegerEntity.js"
 import ObjectEntity from "../../js/entity/ObjectEntity.js"
 import EntityF from "./EntityF.js"
 
@@ -8,6 +9,11 @@ export default class Entity5 extends ObjectEntity {
     static attributes = {
         key1: AttributeInfo.createType(String),
         key2: AttributeInfo.createType(EntityF),
+        key3: new AttributeInfo({
+            type: IntegerEntity,
+            default: new IntegerEntity(5),
+            silent: true,
+        }),
     }
     static grammar = this.createGrammar()
 }