In the revealjs format, footnotes are not shown at the bottom of a slide when setting `scrollable` to `true`

I have:

• searched the issue tracker for similar issues
• installed the latest version of Quarto CLI
• formatted my issue following the Bug Reports guide

Bug description

In the revealjs format, when setting scrollable: true in the yaml, it is putting footnotes directly under the main content of the slide instead of at the bottom of the slide.

Steps to reproduce

---
title: "Footnote test"
format: 
  revealjs:
    scrollable: true
---

## Footnotes

Add footnotes like this^[Here is the footnote text]

Actual behavior

Footnotes are being displayed directly under the main content of the slide.

Expected behavior

Footnotes should be displayed at the bottom of the slide regardless of whether scrollable is set to true or false.

At a minimum, footnotes should be displayed at the bottom of the slide when scrollable is set to true but Scroll View Mode is toggled off in the Tools menu.

Your environment

• IDE: Posit Workbench 2023.12.1
• OS: Ubuntu 20.04

Quarto check output

$ quarto check
Quarto 1.6.42
[✓] Checking environment information...
      Quarto cache location: /home/user1/.cache/quarto
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.4.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.46.3: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.6.42
      Path: /opt/quarto/1.6.42/bin

[✓] Checking tools....................OK
      TinyTeX: (not installed)
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /usr/local/bin
      Version: 2021

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

[✓] Checking Python 3 installation....OK
      Version: 3.12.9
      Path: /opt/python/3.12.9/bin/python3
      Jupyter: (None)

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

[✓] Checking R installation...........OK
      Version: 4.0.5
      Path: /opt/R/4.0.5/lib/R
      LibPaths:
        - /home/user1/R/x86_64-pc-linux-gnu-library/4.0
        - /opt/R/4.0.5/lib/R/library
        - /pkglibrary/R/4.0
      knitr: 1.42
      rmarkdown: 2.21

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

Start with the minimal revealjs document in the reproduction and inspect the revealjs rendering path for the scrollable setting and footnote placement. Done means footnotes appear at the bottom of the slide with scrollable enabled, including when Scroll View Mode is disabled, without changing the behavior when it is false.