Generated code: note to avoid updating moved class

Author: greenrobot-team

objectbox-java/src/main/java/io/objectbox/model/ValidateOnOpenMode.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 ObjectBox Ltd. All rights reserved.
+ * Copyright 2025 ObjectBox Ltd. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 
-// automatically generated by the FlatBuffers compiler, do not modify
-
+// WARNING: This file should not be re-generated. New generated versions of this
+// file have moved to the config package. This file is only kept and marked
+// deprecated to avoid breaking user code.
 package io.objectbox.model;
 
 /**