Major Description
Inline subqueries with OneRowRelation as leaf nodes instead of decorrelating and rewriting them as left outer joins.
Scalar subquery:
```
SELECT (SELECT c1) FROM t1 -> SELECT c1 FROM t1
```
Lateral subquery:
```
SELECT * FROM t1, LATERAL (SELECT c1, c2) -> SELECT c1, c2 , c1, c2 FROM t1
```
