FIO-9354: Fix custom translation not applied to error message

[mikekotikov]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-9354

Description

What changed?

Used custom translation field name if it's specified

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Breaking Changes / Backwards Compatibility

Use this section to describe any potentially breaking changes this PR introduces or any effects this PR might have on backwards compatibility

Dependencies

None

How has this PR been tested?

Automated test 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