[substrait] [sqllogictest] Unsupported cast type: FixedSizeList

### Describe the bug

~25 sqllogictest cases are failing in Substrait round-trip mode because of the following error:
```
query failed: DataFusion error: This feature is not implemented: Unsupported cast type: FixedSizeList
```

### To Reproduce

```
cargo test --test sqllogictests -- --substrait-round-trip array.slt:1395
```

### Expected behavior

The sqllogictest passes in Substrait round-trip mode

### Additional context

This is part of a broader initiative to improve the reliability of Substrait-to-DataFusion logical plan conversions.
- https://github.com/apache/datafusion/issues/16248