Hover help context is duplicated when under `format`

Bug description

The help context is duplicated for YAML keys when under format.

format	Top level

Steps to reproduce

Taking _quarto.yml:

format:
  html:
    code-copy: true

code-copy: true

Your environment

Latest Quarto VSCode extension: v1.113.0

Quarto check output

b7150a0d767cee7d0aac1796bfe57847b3c65160

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
      commit: b7150a0d767cee7d0aac1796bfe57847b3c65160
      Path: /Users/mcanouil/Projects/quarto/quarto-cli/package/dist/bin

[✓] Checking tools....................OK
      TinyTeX: v2024.05
      Chromium: (not installed)

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

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

[✓] Checking Python 3 installation....OK
      Version: 3.12.4
      Path: /Users/mcanouil/Projects/quarto/quarto-playground/.venv/bin/python3
      Jupyter: 5.7.2
      Kernels: julia-1.10, python3

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

(-) Checking R installation...........ℹ R version 4.4.1 (2024-06-14)
! Config '~/.Rprofile' was loaded!
[✓] Checking R installation...........OK
      Version: 4.4.1
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Users/mcanouil/Projects/quarto/quarto-playground/renv/library/macos/R-4.4/aarch64-apple-darwin20
        - /Users/mcanouil/Library/Caches/org.R-project.R/R/renv/sandbox/macos/R-4.4/aarch64-apple-darwin20/f7156815
      knitr: 1.46
      rmarkdown: 2.26

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