[CH] sum diff with empty lines

### Backend

CH (ClickHouse)

### Bug description

``` sql
CREATE TEMPORARY VIEW lineitem
USING org.apache.spark.sql.parquet
OPTIONS (
path "/data1/liyang/tpch/tpch-data-sf1/lineitem"
) ;

```

vanilla
``` sql
0: jdbc:hive2://localhost:10000/> select sum(if(l_tax > 0.5, 1, 0)) from lineitem;
+---------------------------------+
| sum((IF((l_tax > 0.5), 1, 0))) |
+---------------------------------+
| 0 |
+---------------------------------+
1 row selected (0.323 seconds)
```

gluten
```
0: jdbc:hive2://localhost:10000/> select sum(if(l_tax > 0.5, 1, 0)) from lineitem;
+---------------------------------+
| sum((IF((l_tax > 0.5), 1, 0))) |
+---------------------------------+
| NULL |
+---------------------------------+
1 row selected (0.294 seconds)
```

### Spark version

None

### Spark configurations

_No response_

### System information

_No response_

### Relevant logs

```bash

```

Start by reproducing the provided lineitem query through Gluten with the ClickHouse backend and compare its result with vanilla Spark. Trace the aggregation behavior for sum(if(l_tax > 0.5, 1, 0)) over the shown data, then verify that the result matches the expected zero rather than NULL.

Written by the indexing model from the issue text.