Truncated cells seem to prevent conversion to parquet
See https://github.com/huggingface/datasets-server/pull/1372#issuecomment-1593249655

```
Traceback (most recent call last):
  File "/src/services/worker/src/worker/job_manager.py", line 167, in process
    if len(orjson_dumps(content)) > self.worker_config.content_max_bytes:
  File "/src/libs/libcommon/src/libcommon/utils.py", line 79, in orjson_dumps
    return orjson.dumps(content, option=orjson.OPT_UTC_Z, default=orjson_default)
TypeError: Dict key must be str
```

on https://huggingface.co/datasets/philippemo/dummy_dataset_without_schema_12_06
Truncated cells seem to prevent conversion to parquet: See https://github.com/huggingface/datasets-server/pull/1372#issuecomment-1593249655

```
Traceback (most recent call last):
  File "/src/services/worker/src/worker/job_manager.py", line 167, in process
    if len(orjson_dumps(content)) > self.worker_config.content_max_bytes:
  File "/src/libs/libcommon/src/libcommon/utils.py", line 79, in orjson_dumps
    return orjson.dumps(content, option=orjson.OPT_UTC_Z, default=orjson_default)
TypeError: Dict key must be str
```

on https://huggingface.co/datasets/philippemo/dummy_dataset_without_schema_12_06