feature: expand all items in details widget

source/RobotAPI/libraries/skills_gui/skill_details/SkillDetailsTreeWidget.cpp

@@ -68,7 +68,7 @@ namespace armarx::skills::gui
             this, skillsArgumentsTreeWidgetItem, aron_args, default_args_of_profile);
 
 
-        skillsArgumentsTreeWidgetItem->setExpanded(true);
+        this->expandAll();
 
         // update the ShownSkill
         shownSkill = {skillId, descr};