Fix prefix concatenation in timestamp post-processing for sensevoice (#2670)

slin000111

2025-09-20 88b464edb94531ba98744a5338965af539ab18ec

1
2
3
4
5
6
7
8
9
10
11
12
13    1
14    2
15    3
16    4
17    5
18    6
19    7
20    8
21    9
22    10
23    11
24    12