Update 1D block converter to prevent negative area components.

[jakehader]

Description

The HexComponentsToCylConverter class is updated in this to properly handle and check for
negative area components after the conversion has occurred. This is a scenario that was previously
not handled and can occur when the user implements a block design in the blueprints where
two solid components are connected with a "gap-like" component and then have overlaps due
to thermal expansion. This "gap-like" component can be named anything and can either have
Void or some Liquid material type. Void components explicitly named "gap" are already handled
correctly, but that logic was not sufficient to also handle negative area components in edge modeling
cases.

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Checklist

• The code is understandable and maintainable to people beyond the author.
• Tests have been added/updated to verify that the new or changed code works.
• There is no commented out code in this PR.
• The commit message follows good practices.
• All docstrings are still up-to-date with these changes.

If user exposed functionality was added/changed:

• Documentation added/updated in the doc folder.
• New or updated dependencies have been added to setup.py.

[jakehader]

Hi @john-science - I added a unit test to confirm the behavior of treating negative area components on the 1D conversion process.