FIO-8807: fixed an issue where conditionals based on selectBoxes component do not work

[TanyaGashtold]

Link to Jira Ticket

https://formio.atlassian.net/browse/FIO-8807

Description

What changed?

The select boxes component value is an object like this: {value1: false, value2: true.}. When we use simple conditionals UI for making condition based on select boxes, its value looks like this: 'value1'. Potentially 'value1' can be a stringified number or object.

When the isEqual operator is executed, we check if the comparedValue type is equal to the real value type. If not and the compared value is a string, we try to parse it. In case, when the the selectboxes value is stringified number, we get a number. That means, the previous (that was before my PR) special check for selectboxes is skipped as it has a condition that expects the comparendValue to be a string. Additionally this special check is common and can be applied not just to selectboxes but every time when the real component value is an object and the compared value is a string

This PR adds a new check, that applies the specific select boxes isEqual code only when the condition based component is selectboxes.

How has this PR been tested?

Manually + test

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