FIO 8178: correctly add "validator" param to interpolated error object

[brendanbond]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-8178

Description

This PR did not correctly solve the issue of a missing "validator" param and didn't include tests. I've corrected the error by adding a ruleName prop that conforms to the 4.x renderer error keys and adding tests.

Breaking Changes / Backwards Compatibility

n/a

Dependencies

n/a

How has this PR been tested?

Automated tests added

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