[fix] fix empty asr result (#1794)

Xingchen Song(宋星辰)

2024-06-07 93a02feda1848531a48a1794a8de12a962c84a8e

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¼    1/4
½    1/2
¾    3/4
⅐    1/7
⅑    1/9
⅒    1/10
⅓    1/3
⅔    2/3
⅕    1/5
⅖    2/5
⅗    3/5
⅘    4/5
⅙    1/6
⅚    5/6
⅛    1/8
⅜    3/8
⅝    5/8
⅞    7/8