Add a filter for 'archived' books

[SteelWagstaff]

Network managers can now archive books. When they do, we should provide a mechanism to indicate/separate archived content from non-archived content in the standard network catalog. This will help institutions comply with the new Title II ADA rule.

This was brought up by Stefanie Buck as an important need at the a11y webinar on 2.18.2026

[SteelWagstaff]

Keep -- this is 'content toolkit' / accessibility compliance related. @MichSpieler should probably be informed/involved.

[MichSpieler]

I'm open to taking this into the Accessibility pipeline, but also totally fine if it stays in the Customer-facing team pipeline.

[amandacoolidge]

@MichSpieler Can you please move to Accessibility Pipeline? Just asking you to do so, so that you are aware of the movement.