Bug description

When using KaTeX as HTML math method, the Tippy.js tooltip popups on cross references do not work if the preview snippet contains math.

Note: The problem only appears with references to items of the same document. In a multi-file book project, the references to items in other chapters do render correctly.

Steps to reproduce

---
title: "Reproducible Quarto Document"
format: html
html-math-method: katex
---

:::{#thm-with-math}
### Theorem with math

Text with math $\mathcal P (\mathbb N) ≠ \varnothing$.
:::

:::{#thm-without-math}
### Theorem without math

Just text!
:::

Reference to @thm-with-math. (Popup does not render correctly)

Reference to @thm-without-math. (Popup does render.)

• Preview (or render) HTML.
• Hover over the reference to Theorem 1.

Actual behavior

An empty popup opens.

and the browser console reports:

katex.min.js:1 Uncaught TypeError: KaTeX can only parse string typed expression
    at Gn (katex.min.js:1:274914)
    at Xn (katex.min.js:1:275946)
    at Object.Un [as render] (katex.min.js:1:275385)
    at Object.typesetMath ((index):67:22)
    at processXRef ((index):310:23)
    at Object.cellAttr [as onTrigger] ((index):335:26)
    at ae (tippy.umd.min.js:1:9810)
    at Le (tippy.umd.min.js:1:14548)
    at HTMLAnchorElement.ye (tippy.umd.min.js:1:12326)

Expected behavior

A popup displaying Theorem 1 is shown.

Your environment

• Debian 12/Testing
• Chome 133.0.6943.141 (Official Build) (64-bit)

Quarto check output

Quarto 1.7.15
[✓] Checking environment information...
Quarto cache location: /home/ben/.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: 1.7.15
Path: /opt/quarto/bin

[✓] Checking tools....................OK
Chromium: 869685
TinyTeX: (not installed)

[✓] Checking LaTeX....................OK
Using: Installation From Path
Path: /usr/bin
Version: 2024

[✓] Checking Chrome Headless....................OK
Using: Chrome found on system
Path: /usr/bin/google-chrome
Source: PATH

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

[✓] Checking Python 3 installation....OK
Version: 3.13.2
Path: /usr/bin/python3
Jupyter: (None)

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

[✓] Checking R installation...........(None)

  Unable to locate an installed version of R.
  Install R from https://cloud.r-project.org/