Ado index status sometimes not correctly shown

[mjbvz]

From #253690

1. Signed into Copilot with your internal account (to enable ado code search)
2. Clone an ado repo such as https://dev.azure.com/monacotools/Monaco/_git/vscode-errors
3. In the copilot status indicator, try authenticating (you can also just ask a #codebase question to get prompted)
4. Reload the window and check the copilot status indicator

Bug
In some cases, you will see locally indexed instead of remotely indexed in the status

This seems to be caused by a race. We check if ado indexing is enabled before knowing the current user is internal or not, so read the wrong default value

[joaomoreno]

3. you can also just ask a #codebase question to get prompted

@mjbvz This didn't work for me: #254068

After authenticating: