fix(fe:FSADT1-1283): keep the button Next enabled on step 1

[fterra-encora]

Description

Remembers the status of individual validation so the button Next stays enabled when the user goes back to step 1.
Also makes sure it gets revalidated if a different individual business gets selected or type of business is changed to Unregistered.

Fixes FSADT1-1283

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Documentation update

How Has This Been Tested?

• New unit tests
• New integrated tests
• New component tests
• New end-to-end tests
• New user flow tests
• No new tests are required
• Manual tests (description below)
• Updated existing tests

Checklist

• I have read the CONTRIBUTING doc
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have already been accepted and merged

Further comments

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[github-actions]

Current changelog

Bug Fixes

• make sure to revalidate with user's last name (8bd8b37)
• remember current status of individual validation (6e56205)

[github-actions]

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[mamartinezmejia]

Please named boolean constants with the "Ind" suffix

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[github-actions]

Overall Project	NaN% NaN%	🍏

There is no coverage information present for the Files changed