The dialect picker that pops up in VS Code when clicking the indicator in the status bar always starts with "US" selected

I recently added support for making the dialect indicator in the VS Code status bar clickable.

When you click it, a picker pops up that lets you choose a different dialect.

That all works but there is an "unpolished" quirk: The picker always starts with "US" selected instead of the current dialect of the document.

I tried to fix this yesterday but for some reason I can get very confused working on the VS Code extension in ways that my usual coding LLMs and agents are unable to help with.

It's possibly due to me using VS Code fork for my editor to work on it and I get the editor I code in and the editor that pops up for testing confused, especially when looking for debug info or trying to figure out why a change didn't work.

Another factor might be should I open the full Harper repo as the project to work on or only the VS Code directory of the repo?