Better handling of unmapped status in scrum board

Issue Summary

When an issue moved from an unmapped to mapped status, Jira isn't showing any warning for that scope change.

Steps to Reproduce

• Create a board with unmapped statuses
• Plan a sprint and add a few issues by dragging and dropping them into it.
• Manually add the sprint field to a test issue in an unmapped status.
• Start the sprint.
• Map the status of the test issue.
• Transition the issue.

Expected Results:

Jira should warn for the scope change in the UI:

    // handle column change
        if (issue.columnChange) {
            if (issue.column === 'notDone') {
                if (issue.oldColumn) { // moved from done column
                    return ChangeEvent.reopened;
                } else { // open issue moved from unmapped column to a mapped one
                    return ChangeEvent.scopeAdded; <-----------
                }