using correct encoding in read chunk compaction (apache#15250)

* using correct encoding in read chunk compaction

* add ut

* modify data type

Author: shuwenwei

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/compaction/execute/utils/executor/readchunk/ReadChunkAlignedSeriesCompactionExecutor.java

@@ -385,9 +385,8 @@ private void compactAlignedPageByDeserialize(PageLoader timePage, List<PageLoade
             new ValuePageReader(
                 valuePage.getHeader(),
                 valuePage.getUnCompressedData(),
-                schemaList.get(i).getType(),
-                Decoder.getDecoderByType(
-                    schemaList.get(i).getEncodingType(), schemaList.get(i).getType()));
+                valuePage.getDataType(),
+                Decoder.getDecoderByType(valuePage.getEncoding(), valuePage.getDataType()));
         valuePageReader.setDeleteIntervalList(valuePage.getDeleteIntervalList());
         nonEmptyPageNum++;
       }

iotdb-core/datanode/src/test/java/org/apache/iotdb/db/storageengine/dataregion/compaction/inner/BatchedAlignedSeriesReadChunkCompactionTest.java

@@ -561,7 +561,7 @@ public void testCompactionWithDifferentCompressionTypeOrEncoding() throws Except
             "d0",
             Arrays.asList("s0", "s1", "s2"),
             new TimeRange[] {new TimeRange(100000, 200000), new TimeRange(300000, 500000)},
-            TSEncoding.PLAIN,
+            TSEncoding.RLE,
             CompressionType.LZ4,
             Arrays.asList(false, false, false),
             true);