Optimizer COLLECT_LIST/COLLECT_SET

Currently when using a COLLECT_SET/COLLECT_LIST that involves data from a single table, the aggregation is done after any JOIN operation that is present in the query. For example:

insert into table nested_customers_orders
select c.*, collect_list(named_struct("oid", o.oid, "order_date": o.date...))
from customers c inner join orders o on (c.cid = o.oid)
group by o.oid, o.date,...

If we can tell the optimizer to perform the COLLECT_LIST first (where possible) we can see some performance gains in this pattern of query.