for h5 timestamp parse bug (#1084)

zhaomingwork

2023-11-14 1966047a0b4f307a088981e7e014588433bd499e

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