ModelComponent: fix validators not transferred to attached model

src/db/ModelComponent.ts

@@ -21,6 +21,7 @@ export default abstract class ModelComponent<M extends Model> {
         for (const property of this._properties) {
             if (!property.startsWith('_')) {
                 model[property] = this[property];
+                model['_validators'][property] = this._validators[property] as Validator<ModelFieldData> | undefined;
             }
         }