修复无法预测nospeech标签的问题 (#1604)

zhifu gao

2024-04-10 112c8e6eb7c7b5dd150787848a5c1d6111688ed7

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ID0012W0013 https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/test_audio/asr_example_zh.wav
ID0012W0014 https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/test_audio/asr_example_en.wav