fix bug in asr_inference_paraformer_vad_punc and support without punc model

lzr265946

2023-02-08 5db5950e0735783a8b1c3b5278868b75dd8556a7

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una    isa
pangalawang    dalawa
pangatlo    tatlo
ikaapat    apat
ikalimang    lima
ikaanim    ikaanim
ikapitong    pito
ikawalo    walo
ikasiyam    siyam