Extend filtered aggregation optimizer to support only masked partial aggregation cases

[feilong-liu]

Description

The current optimizer MergePartialAggregationsWithFilter only supports case where there are both aggregations with and without filter on the same filter. For example,
select sum(totalprice), sum(totalprice) filter (where orderpriority='2-HIGH') from orders group by orderdate
will work, but
select sum(totalprice) filter (where orderstatus='F'), sum(totalprice) filter (where orderpriority='2-HIGH') from orders group by orderdate
will not work.
In this change, I extend it to work for the second case too.

Motivation and Context

Extend existing optimizer to a broader range of queries.

Impact

Extend existing optimizer to a broader range of queries.

Test Plan

Add unit tests

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Release Notes

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== RELEASE NOTES ==

General Changes
* Extend  MergePartialAggregationsWithFilter to work for queries where all aggregations have mask

[kaikalur]

Can we actually add the OR of the filters in this case?

So SUM(IF(p1, x)), SUM(IF(p2, x))

will have

SUM(IF(p1 or p2, x))

in the partial agg.