Fix bug with field conditionals being affected by values of hidden fields

[cibelius]

Description

E2e tests: opencrvs/opencrvs-farajaland#1717
Cc PR: opencrvs/opencrvs-countryconfig#1048

There were basically two different bugs:

1. Values of hidden fields were affecting conditionals of other fields

• This is fixed by the change in packages/client/src/v2 events/components/forms/FormFieldGenerator/FormSectionComponent.tsx

2. The omitting of hidden fields was not working correctly, as the omitHiddenFields() might not actually omit all hidden fields

• This is fixed by the recursive function in omitHiddenFields()

This PR resolves #10578 and also other bugs on e.g. correction form flow.

Checklist

• I have linked the correct Github issue under "Development"
• I have tested the changes locally, and written appropriate tests
• I have tested beyond the happy path (e.g. edge cases, failure paths)
• I have updated the changelog with this change (if applicable)
• I have updated the GitHub issue status accordingly

[github-actions]

Oops! Looks like you forgot to update the changelog. When updating CHANGELOG.md, please consider the following:

• Changelog is read by country implementors who might not always be familiar with all technical details of OpenCRVS. Keep language high-level, user friendly and avoid technical references to internals.
• Answer "What's new?", "Why was the change made?" and "Why should I care?" for each change.
• If it's a breaking change, include a migration guide answering "What do I need to do to upgrade?".

[ocrvs-bot]

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