Hotwords file needs to specify default utf-8 encoding. (#2379)

辰冢

2025-02-12 5052ca8bf03c178d9ae73cb68785cd4afb0144d2

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BAC009S0764W0121 <|Speech|>
BAC009S0916W0489 <|Speech|>
asr_example_cn_en <|Speech|>
ID0012W0014 <|Speech|>