User should be alerted somehow if ${workspaceFolder:foo} in `.code-workspace` references unknown folder name

[debonte]

Given a .code-workspace file like this:

{
	"folders": [
		{
			"path": "root1",
			"name": "name1"
		},
		{
			"path": "root2",
			"name": "name2"
		}
	],
	"settings": {
		"python.analysis.include": ["${workspaceFolder:invalid_name}/**"]
	 }
}

VS Code could show a diagnostic on workspaceFolder:invalid_name. It's easy to make a typo here and be confused about why it's not working as expected.

Originally filed as microsoft/pylance-release#6146, but this seems like it could be generally useful (not Pylance-specific).

[vs-code-engineering]

This feature request is now a candidate for our backlog. The community has 60 days to upvote the issue. If it receives 20 upvotes we will move it to our backlog. If not, we will close it. To learn more about how we handle feature requests, please see our documentation.

Happy Coding!

[vs-code-engineering]

This feature request has not yet received the 20 community upvotes it takes to make to our backlog. 10 days to go. To learn more about how we handle feature requests, please see our documentation.

Happy Coding!

[vs-code-engineering]

🙁 In the last 60 days, this feature request has received less than 20 community upvotes and we closed it. Still a big Thank You to you for taking the time to create this issue! To learn more about how we handle feature requests, please see our documentation.

Happy Coding!