feat: handle optional blocks in verticals

completion/services.py

@@ -81,9 +81,13 @@ def vertical_is_complete(self, item):
         if not self.completion_tracking_enabled():
             return None
 
+        optional_vertical = getattr(item, "optional_content", False)
+
         # this is temporary local logic and will be removed when the whole course tree is included in completion
         child_locations = [
             child.location for child in item.get_children() if child.location.block_type != 'discussion'
+            # for non-optional verticals, only include non-optional children
+            and (optional_vertical or not getattr(child, "optional_content", False))
         ]
         completions = self.get_completions(child_locations)
         for child_location in child_locations: