cat出来的文本无法完美输出制表符

WindTerm版本：2.7.0
Host操作系统：windows11
连接协议：ssh

使用WindTerm的ssh连接到某个Linux主机中，找一个带制表符(\t)缩进的文本文件，用cat命令将其打印到Console中，再将其打印内容复制粘贴到记事本，会发现制表符被8个空格字符代替了。

```
chenglong.hu@cdatawifi:~/test$ echo -e "\ttest" > mytest.txt
chenglong.hu@cdatawifi:~/test$ cat mytest.txt
test
```

如果将ssh工具换成xshell，同样的操作能正常输出制表符(\t)内容

Reproduce the report with WindTerm 2.7.0 on Windows 11: connect by SSH to Linux, create a file with a tab using the shown shell commands, run cat, and copy the console text into a text editor. Start by tracing the terminal rendering and copy path; done means copied output preserves the tab rather than converting it to eight spaces, with behavior checked against the reported example.

Written by the indexing model from the issue text.