layout-valign only emits top in HTML

[andrewheiss]

Bug description

layout-valign will create a div with the class quarto-layout-valign-top regardless of the option passed to it.

Steps to reproduce

This generates the same HTML output with layout-valign: bottom, layout-valign: top and layout-valign: center:

---
title: Layout test
---

```{r}
#| label: fig-charts
#| fig-cap: 
#|   - "Speed and Stopping Distances of Cars"
#|   - "Vapor Pressure of Mercury as a Function of Temperature"
#| layout: "[1, 1]"
#| layout-valign: bottom

plot(cars)
plot(pressure)
```

Expected behavior

A div with the class quarto-layout-valign-top, quarto-layout-valign-bottom or quarto-layout-valign-center should be generated.

Actual behavior

This is generated regardless of the layout-valign option:

<div class="cell quarto-layout-panel" data-layout="[1, 1]">
  <div class="quarto-layout-row quarto-layout-valign-top">

Your environment

• IDE: RStudio 2023.06.2+561
• OS: macOS Ventura 13.5.2

Quarto check output

Quarto 1.4.382
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.8: OK
      Dart Sass version 1.55.0: OK
      Deno version 1.33.4: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.4.382
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: v2022.08
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/andrew/Library/TinyTeX/bin/universal-darwin
      Version: 2022

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

[✓] Checking Python 3 installation....OK
      Version: 3.11.3
      Path: /opt/homebrew/opt/python@3.11/bin/python3.11
      Jupyter: 5.3.0
      Kernels: python3

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

[✓] Checking R installation...........OK
      Version: 4.3.1
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library
      knitr: 1.44
      rmarkdown: 2.25

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

[cderv]

Thanks for the report.
It seems that the in-chunk options is not passed to the Markdown output by knitr

::: {.cell layout="[1, 1]"}

```{.r .cell-code}
plot(cars)
plot(pressure)
```

::: {.cell-output-display}
![Speed and Stopping Distances of Cars](test2_files/figure-html/fig-charts-1.png){#fig-charts-1 width=672}
:::

::: {.cell-output-display}
![Vapor Pressure of Mercury as a Function of Temperature](test2_files/figure-html/fig-charts-2.png){#fig-charts-2 width=672}
:::
:::