Encountered two children with the same key

[mortalYoung]

Description

• When append multiple data like

{
                id: // random
                children: [
                    {
                        id: 3,
                       // ...
                    },
                ],
            }

Expected

• We get multiply problems without warning in console

What happened in actually

Warning: Encountered two children with the same key, `3_1`. Keys should be unique so that components maintain their identity across updates. Non-unique keys may cause children to be duplicated and/or omitted — the behavior is unsupported and could change in a future version.