[SPARK-15122] [SQL] Fix TPC-DS 41 - Normalize predicates before pulling them out

## What changes were proposed in this pull request?
The official TPC-DS 41 query currently fails because it contains a scalar subquery with a disjunctive correlated predicate (the correlated predicates were nested in ORs). This makes the `Analyzer` pull out the entire predicate which is wrong and causes the following (correct) analysis exception: `The correlated scalar subquery can only contain equality predicates`

This PR fixes this by first simplifing (or normalizing) the correlated predicates before pulling them out of the subquery.

## How was this patch tested?
Manual testing on TPC-DS 41, and added a test to SubquerySuite.

Author: Herman van Hovell <hvanhovell@questtec.nl>

Closes #12954 from hvanhovell/SPARK-15122.