VS Code visual editor: Inherit the first used language type for subsequent code chunks

Problem: when inserting new code chunks using the VS Code visual editor. The language of the code chunk is always set to python. I have to change the language of the code chunk after inserting.

Desired behavior: insert a code chunk. Change the language of the code chunk to R. Create another code chunk which auto-populates the language to R instead of python.

To repro:

1. Open a new document in VS Code.
2. Save it to a location so that visual editing can be enabled.
3. Enter visual editor
4. Cmd + Shift + i to insert code chunk.
5. change language to {r}
6. Run library(stats)
7. Navigate cursor outside of the code chunk
8. Press cmd + shift + i to insert code chunk
9. this code chunk will be python again.

Start by reproducing the behavior in the VS Code visual editor using the documented steps: insert a Python chunk, change it to R, then insert another chunk. Trace how the editor chooses the language for new chunks. Done means subsequent inserted chunks inherit the first explicitly selected language instead of defaulting to Python.