`script_upload.py` example: Returns `cloudflare.APIStatusError`

### Confirm this is a Python library issue and not an underlying Cloudflare API issue.

- [x] This is an issue with the Python library

### Describe the bug

When running the `script_upload.py` script, I get:

```
cloudflare.APIStatusError: Error code: 415 - {'result': None, 'success': False, 'errors': [{'code': 10001, 'message': 'Content-Type must be one of: application/javascript, text/javascript, multipart/form-data'}], 'messages': []}
```

This indicates to problems:

1. The `except` block should expect an exception of type `APIStatusError`, not `BadRequestError`
2. The `tuple` to upload the files is buggy

### To Reproduce

Run
```bash
CLOUDFLARE_API_TOKEN="..." CLOUDFLARE_ACCOUNT_ID="..." uv run script_upload.py
```

### Code snippets

```Python

```

### OS

macOS

### Python version

3.13

### Library version

4.2.0