Copied text includes unwanted line-breaks in long texts

If the text printed to the terminal is long enough that its text is shown in the next line, and we copy the text from the terminal, the resulting copied text will have unwanted line breaks when pasted into the editor.

For example, the result of:

```
> echo sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
```

will be copied as:
```
sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
ssssssssssssssssssssssssssssss
```

Start by reproducing the issue with the long `echo` command in the integrated terminal and inspect the terminal's copy handling. Done means copying text that wraps visually no longer inserts unwanted line breaks when pasted into an editor.

Written by the indexing model from the issue text.