Use earlier computed name for OuterReference in single-pass resolver

In the following query we would have min(outer(t2.t2a)) as a name for min(t2a) expression.

SELECT t1a 
FROM   t1
WHERE  t1a IN (SELECT t2a 
               FROM   t2
               WHERE  EXISTS (SELECT min(t2a) 
                              FROM   t3))

This is a problem in compatibility between single-pass resolver and fixed-point analyzer because names in single-pass are generated after we finish resolution of aggregate expression min(t2a) (bottom-up manner) and at that point we have OuterReference wrapped around aggregate expression (name looks like outer(min(t2a))).
In this issue I propose that we store the name earlier (in a form of a tag) and use it when needed