Fix: 修复c++后端服务因为空数组的异常退出，以及c++的http服务在收到Ctrl+C信号后无法正常退出 (#2571)

nianjiuhuiyi

2025-06-27 05c8eba11c51ca928eee9c041de1a4192e590aec

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export FUNASR_DIR=$PWD/../../..
 
# NOTE(kan-bayashi): Use UTF-8 in Python to avoid UnicodeDecodeError when LC_ALL=C
export PYTHONIOENCODING=UTF-8
export PATH=$FUNASR_DIR/funasr/bin:$PATH