Quarto fails to render symlinked content

Bug description

Quarto 1.2.313 fails to render symlinked objects with website projects (Linux EndeavourOS).

Steps to reproduce:

1. Create a new quarto website project
2. Symlink to a directory my-simlinked-dir of .qmd and .md files
3. Symlink directly to a few .qmd and .md files
4. Render index.qmd

The directory now looks like

_site
.quarto
my-symlinked-dir
file.md
file.qmd
about.qmd
index.qmd
styles.css
_quarto.yml

file.md and file.md are direct symlinks to the contents of my-simlinked-dir

When you render index.qmd with

  sidebar:
    style: docked
    contents:
      - "file.qmd"
      - "file.md"
      - "my-simlinked-dir/file.qmd"
      - "my-simlinked-dir/file.md"

no HTML files are generated from these files. Also quarto doesn't show any links on the side bar, presumably because it is unable to resolve these paths.

Checklist

• Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
• Please format your issue so it is easier for us to read the bug report.
• Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
• Please document the operating system you're running. If on Linux, please provide the specific distribution.