Incorrect Russian filenames encoding after extraction by datasets.DownloadManager.download_and_extract()
## Dataset viewer issue for 'MalakhovIlya/RuREBus'

**Link:** https://huggingface.co/datasets/MalakhovIlya/RuREBus

**Description**
Using os.walk(topdown=False) in DatasetBuilder causes following error:
Status code:   400
Exception:     TypeError
Message:       xwalk() got an unexpected keyword argument 'topdown'
Couldn't find where "xwalk" come from. How can I fix this?

Am I the one who added this dataset ? Yes
