[VL] UnboundedWindowFunctionFrame OOM when partition is large

### Backend

VL (Velox)

### Bug description

UnboundedWindowFunctionFrame is entire Partition Frame, velox will load the entire partition's data into memory, which may cause OOM.
For example:
```
select *, sum(c1) over () as sum from t
```

### Gluten version

_No response_

### Spark version

None

### Spark configurations

_No response_

### System information

_No response_

### Relevant logs

```bash

```

Start by reproducing the supplied `select *, sum(c1) over () as sum from t` query with a large partition, then trace `UnboundedWindowFunctionFrame` in the Velox backend. Done means the unbounded window no longer loads the entire partition into memory and still returns correct results; add a regression test covering the large-partition case.

Written by the indexing model from the issue text.