Cmd + shift + k does not knit an R Markdown document

Positron Version:

Positron Version: 2024.06.1 (Universal) build 27
Code - OSS Version: 1.90.0
Commit: https://github.com/posit-dev/positron/commit/a893e5b282612ccb2200102957ac38d3c14e5196
Date: 2024-06-26T02:08:06.673Z
Electron: 29.4.0
Chromium: 122.0.6261.156
Node.js: 20.9.0
V8: 12.2.281.27-electron.0
OS: Darwin arm64 23.4.0

Steps to reproduce the issue:

1. Create an Rmd file
2. hover over the play button to assert that the keyboard shortcut should be available

4. Press keyboard shortcut to try rendering Rmd
5. assert that nothing happens

What did you expect to happen?

The document would render.

Additional thoughts on this:

I find this behavior to be really awkward and I think the story can be improved greatly if Positron and quarto extension didn't classify Rmd files as Quarto language type.

If Rmd is recognized for an Rmd document you can create keybindings that utilize something like

       "args": {
            "langId": "rmd",
            "code": "rmarkdown::render(...)"
        }

Forcing Rmd to be quarto makes everything uncomfortable.

Reproduce the issue with an R Markdown file in Positron and inspect the play-button command and keyboard-shortcut handling, including how Rmd is classified as Quarto. Done means Cmd+Shift+K triggers rendering and the shortcut shown by the play button matches the working command.