update proc for oov in hotword onnx inference

shixian.shi

2023-09-12 9c622feb645ee8ab166cd6d5fc9d0b2130a0f5fd

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.4
lm_weight: 0.0