Support array concat with different dimensions

### Is your feature request related to a problem or challenge?

> Concatenates the two arrays. Concatenating a null or empty array is a no-op; otherwise the arrays must have the same number of dimensions (as illustrated by the first example) or **differ in number of dimensions by one (as illustrated by the
second)**. Ref https://www.postgresql.org/docs/current/functions-array.html

Concat with the same number of dimensions is already supported, but the dimensions differ by one is not.

- [ ] array_concat
- [ ] array concat op (lhs || rhs)

# Same dimensions concat
select array_concat(make_array([1,2], [3,4]), make_array([5, 6]))
> [[1, 2], [3, 4], [5, 6]]

# Diff 1 concat
select array_concat(make_array([1,2], [3,4]), make_array(5, 6))
> [[1, 2], [3, 4], [5, 6]]

select array_concat(make_array(5, 6), make_array([1,2], [3,4]))
> [[1, 2], [3, 4], [5, 6]]

Three of the result should be the same

### Describe the solution you'd like

We can add an additional dimension to the lower dimension array, then contact them

### Describe alternatives you've considered

Anything else that works

### Additional context

I plan to work on this

Start at the array_concat entry point and the array concat operator (lhs || rhs), using the PostgreSQL array-concatenation examples in the issue as behavioral reference. Verify both operand orders and the existing same-dimension behavior; done means both function and operator support one-dimension differences, including the shown outputs.

Written by the indexing model from the issue text.