Consolidate C9 validation error ignores

[pdeziel]

Scope of changes

This fixes a compatibility issue with older VASP records. This problem manifests in an error on the Admin UI while trying to update a contact. In the contact update endpoint, GDS checks to make sure the entire VASP record including the contact is valid before committing the update and fails if it is not valid. This issue has been previously discussed in #34 and fixed in the TRISA codebase and we had to put a workaround in the GDS registration code.

This PR consolidates the workaround in one spot to avoid duplicated code and make sure that older VASPs that violate this constraint can still be edited from the Admin UI and adds a test to verify the current behavior.

SC-7632

Type of change

• bug fix
• new feature
• documentation
• other (describe)

Acceptance criteria

This should fix SC-7632 and the admin should be able to edit contacts from the Admin dashboard.

Author checklist

• I have manually tested the change and/or added automation in the form of unit tests or integration tests
• I have updated the dependencies list
• I have recompiled and included new protocol buffers to reflect changes I made
• I have added new test fixtures as needed to support added tests
• Check this box if a reviewer can merge this pull request after approval (leave it unchecked if you want to do it yourself)
• I have moved the associated Shortcut story to "Ready for Review"

Reviewer(s) checklist

• Any new user-facing content that has been added for this PR has been QA'ed to ensure correct grammar, spelling, and understandability.

[rebeccabilbro]

Thank you @pdeziel for streamlining these validation checks on VASPs to make sure we're doing things the same way everywhere!