Treenode index error

**Describe the bug**

```
key = str(0)
node = TreeNode(name=key)
```
`node.name` return `TreeNode` instead of `0`

**To Reproduce**

switch to feature/treeform

![image](https://github.com/user-attachments/assets/ff5db727-0352-4e60-a8c4-8c4ac4843c29)
