FIO-9280 fixed validation for select boxes with valid values and when value property is not set

[HannaKurban]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-9280

Description

Fixed an issue where validation was triggered with the correct value for items of the SelectBoxes component if Value Property was not set

Breaking Changes / Backwards Compatibility

n/a

Dependencies

formio/core#185

#5894

How has this PR been tested?

*locally. Automated test have been added previously *

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