default boolean notInitializedLastTimeWindow() {
    return false;
  }
Especially for TimeWindow, if there are no points belong to last TimeWindow, the last
TimeWindow will not initialize window and aggregators in the aggregation frame.

@return whether the window is TimeWindow and the last TimeWindow has not been initialized
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/window/IWindowManager.java