Problem description: Headers are missing in Columns field in Top hosts widget configuration form in case if no columns are selected.
Steps to reproduce:
- Open any dashboard in edit mode
- Press "Add widget" button
- Set widget type to "Top hosts"
- Check "Column" field
Result: There are no table headers in "Columns" field, only the Add button is displayed. Table headers appear only after a column is added.
Expected: Table headers should be displayed in the columns field even if no columns are selected.