Adds Namespace UI to Access Control - Also adds two step buttons to other Access Control pages
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Co-authored-by: Phil Renaud <phil@riotindustries.com>
This continues #8455 by adding accessibility audits to component integration
tests and fixing associated errors. It adds audits to existing tests rather than
adding separate ones to facilitate auditing the various permutations a
component’s rendering can go through.
It also adds linting to ensure audits happen in component tests. This
necessitated consolidating test files that were scattered.