Intersection : Add Python support for triangle and result values (#8505)

#8508 Python : Make sure an empty list will be received as empty list in Python

Co-authored-by: magnesj <magnesj@users.noreply.github.com>

ApplicationLibCode/ProjectDataModel/Intersections/RimIntersectionCollection.h

@@ -83,6 +83,8 @@ public:
     void onChildDeleted( caf::PdmChildArrayFieldHandle*      childArray,
                          std::vector<caf::PdmObjectHandle*>& referringObjects ) override;
 
+    void onChildAdded( caf::PdmFieldHandle* containerForNewObject ) override;
+
 protected:
     void                 fieldChangedByUi( const caf::PdmFieldHandle* changedField, const QVariant& oldValue, const QVariant& newValue ) override;
     caf::PdmFieldHandle* objectToggleField() override;