[SPARK-17337][SQL] Do not pushdown predicates through filters with predicate subqueries

## What changes were proposed in this pull request?
The `PushDownPredicate` rule can create a wrong result if we try to push a filter containing a predicate subquery through a project when the subquery and the project share attributes (have the same source).

The current PR fixes this by making sure that we do not push down when there is a predicate subquery that outputs the same attributes as the filters new child plan.

## How was this patch tested?
Added a test to `SubquerySuite`. nsyca has done previous work this. I have taken test from his initial PR.

Author: Herman van Hovell <hvanhovell@databricks.com>

Closes #15761 from hvanhovell/SPARK-17337.