Fix concurrent delete and flush error (#17026)

Author: HTHou

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/DataRegion.java

@@ -3249,6 +3249,12 @@ private void deleteDataInSealedFiles(Collection<TsFileResource> sealedTsFiles, M
         continue;
       }
 
+      // the tsfile may not be closed here, it should not be added in deletedByFiles
+      if (!sealedTsFile.isClosed()) {
+        deletedByMods.add(sealedTsFile);
+        continue;
+      }
+
       ITimeIndex timeIndex = sealedTsFile.getTimeIndex();
 
       if ((timeIndex instanceof ArrayDeviceTimeIndex)