Don't insert spaces after list items markers when switching to visual mode in the VS Code extension

Currently, switching to visual mode in the VS Code extension inserts three additional whitespaces after each list item marker. Take the following qmd file as an example:

# A title heading

Some text here and there

- a list
- with some
- items

If I switch to Visual Mode and then back to source mode again, the file has been modified to look like this:

# A title heading

Some text here and there

-   a list
-   with some
-   items

This seems consistent with how pandoc --to mardown, but in the quarto documentation lists are generally written with a single space following the list marker. Would it be possible to support this in the VS Code extension, either as a new default or an option depending on what is the most appropriate?

In the commonmark docs, there is a short writeup on their motivation to change away from the legacy four space rule and support a more flexible list space design that defaults to single space. This output can also be achieved with pandoc --to commonmark:

Start in the VS Code extension's visual-mode conversion path and reproduce the issue with the qmd list example from the report. Compare the round trip with pandoc --to markdown and --to commonmark. Done means switching to visual mode and back preserves a single space after each list marker, or the chosen option is documented and tested.