Assembly: Insert Component: Fix 'Joint Group' being listed even though it's empty. It's because we were using OutList instead of claimChildren.

src/Mod/Assembly/CommandInsertLink.py

@@ -180,7 +180,7 @@ class TaskAssemblyInsertLink(QtCore.QObject):
                                     (not onlyParts and child.isDerivedFrom("Part::Feature"))
                                     or child.isDerivedFrom("App::Part")
                                 )
-                                for child in obj.OutListRecursive
+                                for child in obj.ViewObject.claimChildrenRecursive()
                             ):
                                 continue  # Skip this object if no relevant children
 
@@ -201,7 +201,7 @@ class TaskAssemblyInsertLink(QtCore.QObject):
                         if obj.isDerivedFrom("App::Part") or obj.isDerivedFrom(
                             "App::DocumentObjectGroup"
                         ):
-                            process_objects(obj.OutList, objItem)
+                            process_objects(obj.ViewObject.claimChildren(), objItem)
 
             guiDoc = Gui.getDocument(doc.Name)
             process_objects(guiDoc.TreeRootObjects, docItem)