Activate extension when a R script file is opened outside of a workspace

Is your feature request related to a problem? Please describe.

I often use the vscode-R extension without opening a workspace. Currently, the vscode-R extension is activated when a workspace containing R scripts is opened. The extension does not activate when opening a single R script file outside of a workspace. This means that I have to force the extension to activate so that I can have the autocomplete and popup help features working. I force the extension to activate by opening the R Help feature which I think works due to the onWebviewPanel:rhelp activation event.

Describe the solution you'd like

The following patch to the package.json file activates the extension when an R script file is opened outside of a workspace folder. Having the onLanguage:r line is consistent with other extensions, namely the Python and C/C++ extensions from Microsoft.

--- package.json.orig	2025-07-04 08:48:57.676941500 -0500
+++ package.json	2025-07-04 08:51:26.174039600 -0500
@@ -31,7 +31,8 @@
 	"activationEvents": [
 		"workspaceContains:**/*.{rproj,Rproj,r,R,rd,Rd,rmd,Rmd}",
 		"onCommand:r.runSelectionInActiveTerm",
-		"onWebviewPanel:rhelp"
+		"onWebviewPanel:rhelp",
+		"onLanguage:r"
 	],
 	"main": "./dist/extension",
 	"contributes": {

Describe alternatives you've considered

Force the vscode-R extension to activate by opening the R Help feature in the extension. Not ideal as it involves an extra step. The above patch makes the extension available seamlessly when working outside of vscode workspaces.

Additional context

Open package.json and inspect the activationEvents array, starting with the existing workspaceContains, command, and webview entries. Add activation for the R language so a standalone R script starts the extension, then verify that opening an R file outside a workspace enables the extension's features.