Limit comparison to Uri path

We attempted to specify exactly which URI we're expecting here.

However, `Uri.parse` behaves differently in the test than it does in
the code so we've inadvertently created a flakey test [1]. The URI we
generate in the test has a `scheme: 'c'` while the one in the code has
a `scheme: 'C'` property.

This only happens on windows, not ubuntu.

Let's narrow the comparison to just the path of the URI.

[1]: https://github.com/github/vscode-codeql/actions/runs/4478429334/jobs/7871178529#step:7:231

extensions/ql-vscode/test/vscode-tests/no-workspace/helpers.test.ts

@@ -620,7 +620,9 @@ describe("prepareCodeTour", () => {
         expect(showInformationMessageSpy).toHaveBeenCalled();
         expect(commandSpy).toHaveBeenCalledWith(
           "vscode.openFolder",
-          Uri.parse(tutorialWorkspacePath),
+          expect.objectContaining({
+            path: Uri.parse(tutorialWorkspacePath).fsPath,
+          }),
         );
       });
     });