[BugFix] Fix an exception when reading a Paimon table with array<row>…

… column (backport #52743) (#52876)

Co-authored-by: Jiao Mingye <35512473+mxdzs0612@users.noreply.github.com>

java-extensions/paimon-reader/src/main/java/com/starrocks/paimon/reader/PaimonColumnValue.java

@@ -19,8 +19,8 @@
 import org.apache.paimon.data.Decimal;
 import org.apache.paimon.data.InternalArray;
 import org.apache.paimon.data.InternalMap;
+import org.apache.paimon.data.InternalRow;
 import org.apache.paimon.data.Timestamp;
-import org.apache.paimon.data.columnar.ColumnarRow;
 import org.apache.paimon.types.ArrayType;
 import org.apache.paimon.types.DataField;
 import org.apache.paimon.types.DataType;
@@ -110,7 +110,7 @@ public void unpackMap(List<ColumnValue> keys, List<ColumnValue> values) {
 
     @Override
     public void unpackStruct(List<Integer> structFieldIndex, List<ColumnValue> values) {
-        ColumnarRow array = (ColumnarRow) fieldData;
+        InternalRow array = (InternalRow) fieldData;
         List<DataField> fields = ((RowType) dataType).getFields();
         for (int i = 0; i < structFieldIndex.size(); i++) {
             Integer idx = structFieldIndex.get(i);