update proc for oov in hotword onnx inference

shixian.shi

2023-09-12 9c622feb645ee8ab166cd6d5fc9d0b2130a0f5fd

 funasr/runtime/python/onnxruntime/funasr_onnx/utils/timestamp_utils.py

@@ -1,3 +1,7 @@
# -*- encoding: utf-8 -*-
# Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights Reserved.
#  MIT License  (https://opensource.org/licenses/MIT)

import numpy as np