Inherit marketing reporting abstract models in right order

Abstract models should be always the last in inheritance because
they are object when optional dependencies are not activated

Closes #14057

modules/marketing_campaign/sale_reporting.py

@@ -81,7 +81,7 @@ class MarketingContext(BaseContext):
         lazy_gettext('marketing_campaign.msg_marketing_source'))
 
 
-class Marketing(MarketingCampaignMixin, Abstract, ModelView):
+class Marketing(MarketingCampaignMixin, ModelView, Abstract):
     __name__ = 'sale.reporting.marketing'
 
     @classmethod