Support knitr warning option

Bug description

Quarto is ignoring warning: false passed to knitr.

Consider the minimal working example:

_quarto.yml:

project:
  title: "mwe"

editor: visual

mwe.qmd:

---
title: "mwe"
---

## Quarto

```{r}
#| output: asis
#| warning: true
warning("My warning with warning: true")
```

```{r}
#| output: asis
#| warning: false
warning("My warning with warning: false")
```

It produces

For comparison, consider the minimal working example in R Markdown:

---
title: "mwe"
author: "Raniere Silva"
date: "2022-07-20"
output: html_document
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```

```{r output='asis', warning=TRUE}
warning("My warning with warning: true")
```

```{r output='asis', warning=FALSE}
warning("My warning with warning: false")
```

The R Markdown document produces

Environment

Operating System: Ubuntu

quarto check Output

[✓] Checking Quarto installation......OK
       Version: 1.0.32
       Path: /opt/quarto/bin
 
[✓] Checking basic markdown render....OK
 
[✓] Checking Python 3 installation....OK
       Version: 3.10.5 (Conda)
       Path: /opt/conda/bin/python
       Jupyter: (None)
 
       Jupyter is not available in this Python installation.
       Install with conda install jupyter
 
[✓] Checking R installation...........OK
       Version: 4.1.3
       Path: /opt/conda/lib/R
       LibPaths:
         - /opt/conda/lib/R/library
       rmarkdown: 2.14
 
[✓] Checking Knitr engine render......OK

quarto tools check Output

 Tool         Status            Installed     Latest  
 chromium     Not installed     ---           869685  
 tinytex      Not installed     ---           v2022.07

Checklist

• formatted your issue so it is easier for us to read?
• included a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
• documented the quarto version you're running, by pasting the output from running quarto check in the "Quarto Check Output" text area?
• documented the version of the quarto tools you're running, by providing the output from running quarto tools check in the "Quarto Tools Check Output" text area?
• documented the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
• documented which operating system you're running? If on Linux, please provide the specific distribution as well.
• upgraded to the latest version, including your versions of R, the RStudio IDE, and relevant R packages?

Start with the minimal _quarto.yml and mwe.qmd example, then inspect how the knitr engine handles the two warning options. Reproduce the output difference described in the issue and verify that the warning marked false is suppressed while the warning marked true remains visible.