Add lint warning when code block is indented inconsistently inside list

Bug description

I'm trying to include a code block in a numbered list and I'm getting unexpected output:

Input:

---
title: "Test"
author: "Andew Barros"
format: html
---

1. Question

    ```{r}
    1 + 1
    ```

1. Question 2

Output:

1. Question

1 + 1

::: {.cell-output .cell-output-stdout} [1] 2 ::: :::

2. Question 2

(The line with ::: is visible in the output both when rendered to html and PDF).

If I render that same file through the rmarkdown pathway -- I get the intended output

I'm using RStudio 2022.07.2 Build 576 on MacOS 13.0.1

Checklist

• Please include 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.
• Please format your issue so it is easier for us to read the bug report.
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