visual editor moves letters onto new line when footnotes are in bullet points of revealjs slide

Bug description

Sorry for the long title, but this one is so weird to describe. In a revealjs document, with cannonical markdown used, when a slide has more than one bullet point and the last bullet has more than 1 footote, the last number-of-footnotes minus 1 letters of the last word of the bullet point get moved to a new line when the document is saved.

Steps to reproduce

Save this document...

---
title: "Untitled"
format: revealjs
editor: 
  markdown:
    canonical: true
---

## Slide title

-   A bullet point

-   Some text with footnotes[^1], and other footnotes[^2], a third one [^3], and A final word

[^1]: test

[^2]: test

[^3]: test

And you'll get this:

---
title: "Untitled"
format: revealjs
editor: 
  markdown:
    canonical: true
---

## Slide title

-   A bullet point

-   Some text with footnotes[^1], and other footnotes[^2], a third one [^3], and A final wo
    rd

[^1]: test

[^2]: test

[^3]: test

Expected behavior

Cannonical markdown/visual editor should not split part of a word onto a new line

Actual behavior

Last word gets split with some letters moved onto new line

Your environment

• RStudio: 2024.04.2+764
• OS: macOS 14.6.1

Quarto check output

Quarto 1.4.554
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.11: OK
      Dart Sass version 1.69.5: OK
      Deno version 1.37.2: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.4.554
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: v2024.03.13
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/ericscott/Library/TinyTeX/bin/universal-darwin
      Version: 2024

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

[✓] Checking Python 3 installation....OK
      Version: 3.10.9 (Conda)
      Path: /usr/local/Caskroom/miniconda/base/bin/python
      Jupyter: 5.3.0
      Kernels: python3

(\) Checking Jupyter engine render....Traceback (most recent call last):
  File "/Applications/quarto/share/jupyter/jupyter.py", line 21, in <module>
    from notebook import notebook_execute, RestartKernel
  File "/Applications/quarto/share/jupyter/notebook.py", line 14, in <module>
    from yaml import safe_load
ModuleNotFoundError: No module named 'yaml'
[✓] Checking Jupyter engine render....OK

Start by reproducing the supplied .qmd example in Quarto's visual editor with canonical markdown enabled and revealjs output, then trace the save path that rewrites the final bullet. Done means saving the document no longer moves letters from a word onto a new line; verify the original and multi-footnote variants.