Resolve VCSWP-24666 (#85)

* Change all model constructors to check for user provided values and assign the values accordingly

* Add falsy values test structure to most model tests

* Add change to test title and model constructor assignment logic

* Add tests for required & default values

* Upgrade dependencies

* Update unit test setup

* Fix unit tests

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Co-authored-by: Navneet Garg <[email protected]>

Author: amahadaya