load_dataset with multiple jsonlines files interprets datastructure too early

### Describe the bug

likely related to #6460

using `datasets.load_dataset("json", data_dir= ... )` with multiple `.jsonl` files will error if one of the files (maybe the first file?) contains a full column of empty data.

### Steps to reproduce the bug

real world example:
data is available in this [PR-branch](https://github.com/Vipitis/shadertoys-dataset/pull/3/commits/cb1e7157814f74acb09d5dc2f1be3c0a868a9933). Because my files are chunked by months, some months contain all empty data for some columns, just by chance - these are `[]`. Otherwise it's all the same structure.

```python
from datasets import load_dataset
ds = load_dataset("json", data_dir="./data/annotated/api")
```

you get a long error trace, where in the middle it says something like
```cs
TypeError: Couldn't cast array of type struct, published: int64> to null
```

toy example: (on request)

### Expected behavior

Some suggestions
1. give a better error message to the user
2. consider all files before deciding on a data structure for a given column.
3. if you encounter a new structure, and can't cast that to null, replace the null-hypothesis. (maybe something for pyarrow)

as a workaround I have lazily implemented the following (essentially step 2)
```python
import os
import jsonlines
import datasets

api_files = os.listdir("./data/annotated/api")

api_files = [f"./data/annotated/api/{f}" for f in api_files]

api_file_contents = []
for f in api_files:
with jsonlines.open(f) as reader:
for obj in reader:
api_file_contents.append(obj)

ds = datasets.Dataset.from_list(api_file_contents)
```
this works fine for my usecase, but is potentially slower and less memory efficient for really large datasets (where this is unlikely to happen in the first place).

### Environment info

- `datasets` version: 2.20.0
- Platform: Windows-10-10.0.19041-SP0
- Python version: 3.9.4
- `huggingface_hub` version: 0.23.4
- PyArrow version: 16.1.0
- Pandas version: 2.2.2
- `fsspec` version: 2023.10.0