message: We need to take into account any overflow elements in GroupRowsAvailable of list reader
diff: @@ -30,7 +30,7 @@ public:
  }
  idx_t GroupRowsAvailable() override {
  - return child_column_reader->GroupRowsAvailable();
  + return child_column_reader->GroupRowsAvailable() + overflow_child_count;
  }
  private:
  