Bug fix for array type selector causing array aggregation over window frame fail

[sreemanamala]

Description

This commit fixes the windowed aggregation involving array type selector.

example query (earlier used to fail with a defensive exception):

select countryName, cityName, channel, array_concat_agg(ARRAY['N/A', channel], 10000) over (partition by cityName order by countryName) as c
from wikipedia
where countryName in ('Austria', 'Republic of Korea') and (cityName in ('Horsching', 'Vienna', 'Seoul', 'Jeonju') or cityName is null)
group by countryName, cityName, channel

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Key changed/added classes in this PR

• DefaultColumnSelectorFactoryMaker
• ExpressionSelectors

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This PR has:

• [x] been self-reviewed.
  • [ ] using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• [ ] added documentation for new or modified features or behaviors.
• [ ] a release note entry in the PR description.
• [ ] added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• [ ] added or updated version, license, or notice information in licenses.yaml
• [ ] added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• [x] added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• [ ] added integration tests.
• [ ] been tested in a test Druid cluster.