JSONMap does not add attributes to child nodes

[kirillmsq]

JSONMap does not add attributes to child nodes, only to the root.

private static final String JSON = """
        {
            "child1" : {
                "attr1": "something"
            }
        }
        """;

@Test
public void test() {
    var json = JSONHelper.toMap(JSON);
    System.out.println(json);
    json.put("child2", "anything");
    System.out.println(json);
    json.getMap("child1").put("attr2", "new");
    System.out.println(json);
}

Actual output:
{"child1":{"attr1":"something"}}
{"child2":"anything","child1":{"attr1":"something"}}
{"child2":"anything","child1":{"attr1":"something"}}