Cannot validate macro config ui in case of group mixing optional and mandatory parameters

Reproduction steps:

• Create a macro with 2 parameters one mandatory and one optional, both belonging to same group
• Include the macro in a page and edit it using the WYSIWYG editor

Expected result:

• When validating the config UI only filling the mandatory parameter is requested

Obtained result:

• the UI displays that the group is actually mandatory and request to fill both parameters