Fix spreadsheet editor displayed columns in custom view

The spreadsheet editor uses the default columns unless the user manually edits columns in the list view

Step to reproduce:

• override the default search view in view designer with some custom columns
• deploy
• search and open the spreadsheet editor
• the default columns are displayed

Or:

• display webui in french
• search and open the spreadsheet editor
• columns are displayed with english labels
• close
• edit the columns in the list view
• open the spreadsheet editor
• columns are now displayed with French Labels