Multi-file layout doesn't work with R

[royfrancis]

Just trying out the multifile layout of the editor.

```{shinylive-r}
#| standalone: true
#| components: [editor, viewer]

## file: ui.r
ui <- fluidPage(
  sliderInput("value", label="Value", min=1, max=50, step=1, value=2),
  textOutput("out")
)

## file: server.r
server <- function(input, output, session) {
  output$out <- renderText(paste0("Squared: ",input$value^2))
}

#shinyApp(ui=ui,server=server)
```

The editor seems to be working, but the app doesn't show up.

quarto 1.4.549
quarto-shinylive 0.1.0