### Bug description

I think I'm facing a bug, but let me know if I'm not doing things right.

When outputting to a beamer format, I can't get code block formatting to behave as I would like. Specifically, using the options `code-block-bg`, `code-block-border-left`, and `highlight-style`, I do not get any background color or left border at all. This is despite all 3 of these properties being part of the [beamer options](https://quarto.org/docs/reference/formats/presentations/beamer.html).

The same combination of settings works perfectly when outputting to a pdf format, however.

### Steps to reproduce

Here is a MWE with the issue:

```` qmd
---
title: "Test"
format:
    beamer:
        code-block-bg: "#f8f8f8"
        code-block-border-left: "#245ABE"
        highlight-style: github
---

### Testing code blocks

Code block:
```python
import numpy as np

x = 3   # Defining a variable

def best_function(arg1):
    """
    This is a docstring.
    """
    return arg1

best_function(24.8)
```
````

### Expected behavior

This should produce the following colors (taken from pdf output) -- focusing here only on the code block:
![Screenshot 2023-06-27 at 6 26 20 PM](https://github.com/quarto-dev/quarto-cli/assets/116678368/64dae35c-fc00-4ba7-8919-6e5758a590a9)


### Actual behavior

When outputting to beamer, I get the following instead:
![Screenshot 2023-06-27 at 6 28 13 PM](https://github.com/quarto-dev/quarto-cli/assets/116678368/2a9d7033-1030-4afc-8f58-28679dce2f56)

Also, if I comment out `highlight-style: github`, I get even stranger behavior. The whole block takes on the color of the left border:
![Screenshot 2023-06-27 at 6 29 10 PM](https://github.com/quarto-dev/quarto-cli/assets/116678368/249e5e27-be93-4be2-a408-0d0c551ba934)


### Your environment

- OS: MacOS 13.4.1
- IDE: VSCodium 1.79.2

### Quarto check output

```bash
[✓] 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: 1.3.427
      Path: /Applications/quarto/bin

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

[✓] Checking Python 3 installation....OK
      Version: 3.10.12 (Conda)
      Path: /opt/homebrew/Caskroom/miniforge/base/bin/python
      Jupyter: 5.3.1
      Kernels: julia-0.4, matlab_kernel, python3

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

[✓] Checking R installation...........OK
      Version: 3.2.4
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Users/me/Library/R/3.2/library
        - /Library/Frameworks/R.framework/Versions/3.2/Resources/library
      knitr: 1.12.3
      NOTE: knitr version 1.12.3 is too old. Please upgrade to 1.30 or later.
      rmarkdown: 0.9.5

      The knitr package is outdated in this R installation.
      Update with update.packages("knitr")
```
dragonstyle
2023-06-27T15:33:17Z
darthlite
bug latex beamer themes
v1.4
closed
Code block options not rendering correctly in beamer
https://github.com/quarto-dev/quarto-cli/issues/6041