MGNLSTK-661 introduced the setting maximum components in the areas. There should be more possibilities:

1. Improve the conditions:

   if there is a component of type X in this area, only allow Y and Z; otherwise, editors can add V, W X Y and Z in this area)

2. Improve related log messages.
3. Create the DOCU ticket for new improvements + missing DOCU for AreaDefinition.