Bug detecting names with hyphens.

I know hyphenated names like "Jean-Luc Godard" are not typical in Vietnamese, but they may appear in texts, such as news articles.

For `ner('Jean-Luc Godard', deep=True)`

Expected: B-PER, I-PER, I-PER -> 1 entity
Actual: B-PER, B-PER, I-PER -> 2 entities

Note: The model works as expected for `Công ty TNHH Bảo hiểm Nhân thọ Dai-ichi Việt Nam` -> 1 entity