Heading with cross-reference only causes problem in various formats

Bug description

When a section heading consists only of a cross-reference, a duplicate \label{} is created, leading to an incorrect number and hyperlink displaying in the PDF.

Steps to reproduce

---
format: 
    pdf:
        number-sections: true
---

## Section 1

::: {#prp-one}
It is the case that $1+1=2$.
:::

## Proofs of propositions

### @prp-one

Actual behavior

Expected behavior

Produced by replacing final line with ### [Proposition @prp-one]

Your environment

MacOS Sonoma 14.5

Quarto check output

Quarto 1.6.40
[✓] Checking environment information...
      Quarto cache location: /Users/cmccartan/Library/Caches/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: 1.6.40
      Path: /Applications/quarto/bin

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

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

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

[✓] Checking Python 3 installation....OK
      Version: 3.9.6
      Path: /Library/Developer/CommandLineTools/usr/bin/python3
      Jupyter: (None)

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

[✓] Checking R installation...........OK
      Version: 4.4.0
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/library
      knitr: 1.49
      rmarkdown: 2.29

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