Live Preview generates incorrect directory index URLs using encoded backslashes (%5Cfolder%5Cpath)

[kidneyhex]

Description

When Live Preview serves a directory index page for a folder, all generated links include percent‑encoded backslashes (%5C) and duplicated path segments. This results in broken URLs such as:

http://127.0.0.1:3000/apps/%5Capps%5Cfolder

Environment

VS Code: 1.134.0
Live Preview: 0.5.2026072301
OS: Windows 11

Workspace structure example

apps/
    folder/
    anotherfolder/

Steps to reproduce

1. Open a workspace containing subfolders under any directory (e.g., /apps).
2. Start Live Preview (Live Preview: Start Server).
3. Navigate to the folder index page, e.g. http://127.0.0.1:3000/apps.
4. Observe that all links include encoded backslashes and duplicated folder names.

An incorrect result will end up looking like:

<a href="%5Capps%5Cfolder/">folder/</a>
<a href="%5Capps%5Canotherfolder/">anotherfolder/</a>

The expected result (though there could be many ways of formatting):

<a href="./folder/">folder/</a>
<a href="./anotherfolder/">anotherfolder/</a>

Notes:
This appears to be a path‑normalization issue where Windows-style \ separators are encoded instead of converted to /.

Related:
I think these are the same issue, I'm just trying to add more info.

#762
#795