FIO-9329: fix issue where validateWhenHidden now validates hidden and conditionally hidden components

[brendanbond]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-9329

Description

What changed?

Changes to when we validate based on visibility, namely that the shouldSkipValidation function checks for the validateWhenHidden flag AND general visibility (so both conditionally hidden components and intentionally hidden ones).

Breaking Changes / Backwards Compatibility

n/a

Dependencies

n/a

How has this PR been tested?

Tests here are passing, automated tests were included in @formio/js

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