temp: support optional completion for individual XBlocks

Author: Agrendalath

xmodule/x_module.py

@@ -651,6 +651,13 @@ def editable_metadata_fields(self):
 
             metadata_fields[field.name] = self._create_metadata_editor_info(field)
 
+        if "optional_completion" in self.fields:
+            parent = self.get_parent()
+            if parent and not getattr(parent, "optional_completion", False):
+                metadata_fields["optional_completion"] = self._create_metadata_editor_info(
+                    self.fields["optional_completion"]
+                )
+
         return metadata_fields
 
     def _create_metadata_editor_info(self, field):