Footnotes in yaml front matter appear multiple times

Bug description

I discovered this on my own but then found that someone else had come across it as well. There is a lua filter workaround given at that link, but I wonder if this should be handled automatically.

Steps to reproduce

From the command line, do quarto render test.qmd with the following file:

Here's the example from the link modified slightly:

---
title: "How to add a footnote in the YAML block?"
subtitle: "A Question from Stackoverflow"
author: "Yang Hu ^[Retired]"
format: html
---

A footnote from the body is handled fine.[^1]

[^1]: See what I mean?

Expected behavior

Footnotes from yaml front matter should not appear in triplicate and be numbered correctly.

Actual behavior

Here's the result.

Your environment

• using quarto-cli pre-release from a few hours ago
• MacOS 14.4.1

Quarto check output

Quarto 99.9.9
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.2.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.41.0: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 99.9.9
fatal: not a git repository (or any of the parent directories): .git
      Path: /Users/bryanh/Documents/Professional/Research/R_Pkgs/quarto-cli/package/dist/bin

Check file:///Users/bryanh/Documents/Professional/Research/R_Pkgs/quarto-cli/src/resources/vendor/deno-land/x/puppeteer@9-0-2/mod.ts
[✓] Checking tools....................OK
      TinyTeX: v2023.07.08
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/bryanh/Library/TinyTeX/bin/universal-darwin
      Version: 2023

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.12.3
      Path: /opt/homebrew/opt/python@3.12/bin/python3.12
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with python3 -m pip install jupyter

[✓] Checking R installation...........OK
      Version: 4.4.0
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/library
      knitr: 1.46
      rmarkdown: 2.26

[✓] Checking Knitr engine render......OK