update validate required recursion to not recurse when nested data type

[brendanbond]

Link to Jira Ticket

n/a

Description

The validateRequired rule needs to recursively evaluate objects (like select boxes), but it should not recursively evaluate nested data types (such as data grids, edit grids, etc.).

Breaking Changes / Backwards Compatibility

n/a

Dependencies

n/a

How has this PR been tested?

I've added automated tests. (coming soon...)

Checklist:

• I have completed the above PR template
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (if applicable)
• My changes generate no new warnings
• My changes include tests that prove my fix is effective (or that my feature works as intended)
• New and existing unit/integration tests pass locally with my changes
• Any dependent changes have corresponding PRs that are listed above