update bicifparaformer forward

shixian.shi

2023-04-17 2d65e5e754cf67ffa05e027156142e843d29bec4

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 1.0
lm_weight: 0.7