Pick #49403
If the two arrays have the same non-null elements, they are considered
overlapping, and the result is 1.
If the two arrays have no common non-null elements and either array
contains a null element, the result is null.
Otherwise, the result is 0.
```
select arrays_overlap([1, 2, 3], [1, null]); -- result should be 1
select arrays_overlap([2, 3], [1, null]); -- result should be null
select arrays_overlap([2, 3], [1]); -- result should be 0
```
### What problem does this PR solve?
c0bc16d88f