built-in search misses sub-headings; double-reports results

Bug description

Quarto 1.3.340 on macOS

The _quarto.yml

project:
  type: website

website:
  navbar:
    left:
      - text: "home"
        file: index.qmd

The index.qmd

# alpha

Alpha is first. Consider nothing else.


## First {#First}

The first section contains the first set of properties which must appear after
`[First]` in the configuration file.

### `First`  Settings {#First.Settings}

#### `SomeFirstSettingEnabled` {#First.SomeFirstSettingEnabled}

Enable the jump start examples for onboarding. 

#### `AnotherFirstSettingName` {#First.AnotherFirstSettingName}

Indicates how Posit Connect attempts to match the R version associated with
uploaded content with the R versions available on the system.

## Second {#Second}

The second section contains the second set of properties which must appear after
`[Second]` in the configuration file.

### `Second`  Settings {#Second.Settings}

#### `SomeSecondSettingEnabled` {#Second.SomeSecondSettingEnabled}

Enable the jump start examples for onboarding. 

#### `AnotherSecondSettingName` {#Second.AnotherSecondSettingName}

Indicates how Posit Connect attempts to match the R version associated with
uploaded content with the R versions available on the system.

## Third {#Third}

The third section contains the third set of properties which must appear after
`[Third]` in the configuration file.

### `Third`  Settings {#Third.Settings}

#### `SomeThirdSettingEnabled` {#Third.SomeThirdSettingEnabled}

Enable the jump start examples for onboarding. 

#### `AnotherThirdSettingName` {#Third.AnotherThirdSettingName}

Indicates how Posit Connect attempts to match the R version associated with
uploaded content with the R versions available on the system.

## Fourth {#Fourth}

The fourth section contains the fourth set of properties which must appear after
`[Fourth]` in the configuration file.

### `Fourth`  Settings {#Fourth.Settings}

#### `SomeFourthSettingEnabled` {#Fourth.SomeFourthSettingEnabled}

Enable the jump start examples for onboarding. 

#### `AnotherFourthSettingName` {#Fourth.AnotherFourthSettingName}

Indicates how Posit Connect attempts to match the R version associated with
uploaded content with the R versions available on the system.

The "AnotherFirstSettingName" term is not found.

The "jump start" query repeats results.

[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.1: OK
      Dart Sass version 1.55.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.3.340
      Path: /Applications/RStudio.app/Contents/Resources/app/quarto/bin

[✓] 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: 3.6.3
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/3.6/Resources/library
      knitr: 1.42.8
      rmarkdown: 2.20

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

Steps to reproduce

No response

Expected behavior

No response

Actual behavior

No response

Your environment

No response

Quarto check output

No response

Reproduce the built-in search with the provided _quarto.yml and index.qmd, using the nested headings and repeated “jump start” text from the report. Check that “AnotherFirstSettingName” is found and that repeated matches are reported only once; done means both behaviors are corrected against the supplied example.