public Collection<MixedFileScanTask> allBaseTasks() {
      return allBaseTasks;
    }
Plans full table scanning for a {@link KeyedTable} with optional filters and a specified split
count.

@param keyedTable The {@link KeyedTable} to scan.
@param filters Optional list of filters to apply to the scan.
@param splitCount The atomic integer to track the split count.
@return The list of planned {@link MixedFormatSplit} included {@link MergeOnReadSplit}.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/read/FlinkSplitPlanner.java