RecursionError when loading GLB file with deeply nested JSON in Mesh feature

## Description

Loading a GLB file with deeply nested JSON chunk causes a RecursionError, crashing the application.

## Step to Reproduce

```python
from datasets import Dataset, Mesh
import tempfile, os, struct

def make_malicious_glb(depth=5000):
json_chunk = (b'{"a":' * depth + b'1' + b'}' * depth)
magic = b'glTF'
version = struct.pack('