Markdown code block rendering issues with dollar signs ($)

So when rendering R code in a jupyter notebook inside jupyter labs, the following occurs:

My markdown (rendered by this issue):

No escapes:

```R
# Open a dataset from the file myfile.RData and name it myData:
myData <- load("myfile.RData")

# Create new variable called age_squared equal to each person's age squared:
myData$agesquared <- myData$age * myData$age
```

With single escape:

```R
# Open a dataset from the file myfile.RData and name it myData:
myData <- load("myfile.RData")

# Create new variable called age_squared equal to each person's age squared:
myData\$agesquared <- myData\$age * myData\$age
```

With double escape:

```R
# Open a dataset from the file myfile.RData and name it myData:
myData <- load("myfile.RData")

# Create new variable called age_squared equal to each person's age squared:
myData\\$agesquared <- myData\\$age * myData\\$age
```

Screenshot in Jupyter Labs Notebook:


Start by reproducing the Markdown code-block rendering in a JupyterLab notebook with the provided R examples, comparing unescaped, single-escaped, and double-escaped dollar signs. Done means dollar signs in the R code block render as literal characters without requiring escapes.

Written by the indexing model from the issue text.