How to reproduce :

• create a new page
• insert a new content that stay to draft state
  > in the site map, the icon of the page is black
• insert an existing valid content
  > in the site map, the icon of the page become green
• delete the validated content of the page
  > the unique content of the page has its state defined as draft, but in the site map, the icon of the page is still green.

Expected behavior :

• when the page become unpublished, the icon should revert to the first state : black