Merge "Set a default value for flagstatus" into main

  std::optional<OverlayableItem> overlayable_item;

  std::optional<StagedId> staged_alias;

  std::optional<FeatureFlagAttribute> flag;

  FlagStatus flag_status;

  FlagStatus flag_status = FlagStatus::NoFlag;

  std::string comment;

  std::unique_ptr<Value> value;