[FLINK-37120][cdc-source-connector] Add ending split chunk first to avoid TaskManager oom

Author: beryllw

flink-cdc-connect/flink-cdc-source-connectors/flink-cdc-base/src/main/java/org/apache/flink/cdc/connectors/base/source/assigner/splitter/JdbcSourceChunkSplitter.java

@@ -470,7 +470,7 @@ private List<ChunkRange> splitEvenlySizedChunks(
             }
         }
         // add the ending split
-        splits.add(ChunkRange.of(chunkStart, null));
+        splits.add(0, ChunkRange.of(chunkStart, null));
         return splits;
     }
 
@@ -498,7 +498,7 @@ private List<ChunkRange> splitUnevenlySizedChunks(
             chunkEnd = nextChunkEnd(jdbc, chunkEnd, tableId, splitColumn, max, chunkSize);
         }
         // add the ending split
-        splits.add(ChunkRange.of(chunkStart, null));
+        splits.add(0, ChunkRange.of(chunkStart, null));
         return splits;
     }