refactor(gov)!: finalize collections migration

[testinginprod]

Description

Closes: #16267

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Author Checklist

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I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
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• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
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• confirmed the correct type prefix in the PR title
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• reviewed state machine logic
• reviewed API design and naming
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• reviewed tests and test coverage
• manually tested (if applicable)

[julienrbrt]

lgtm, one tiny nit.

[julienrbrt]

nit, we should use suite.Require() for conssitency.