ENG-3417: Fix browser nav for action center ignored assets

[eastandwestwind]

https://ethyca.atlassian.net/browse/ENG-3417

Description Of Changes

• Fixes browser navigation for the Action Center ignored/monitored assets page by using the active tab's diff_status filter instead of hardcoding DiffStatus.ADDITION
• Preserves the active tab context (via URL hash) when navigating back to the system view, so users don't lose their place when the system query returns no results

Code Changes

• Replace hardcoded DiffStatus.ADDITION filter with the active tab's diff_status
• Preserve active tab via URL hash on navigation back
• Add activeTab to useEffect dependency array

Steps to Confirm

1. Start up Admin-UI with seed data
2. Navigate to Action Center → select the Ethyca.com website monitor → In the system list, select "Uncategorized Assets" and click "ignore"
3. Switch to the "Ignored" tab, Click "Uncategorized Assets" and confirm it navigates to those uncategorized assets instead of going back to the higher-level Ethyca.com system list

Pre-Merge Checklist

• Issue requirements met
• All CI pipelines succeeded
• CHANGELOG.md updated
  • Add a db-migration This indicates that a change includes a database migration label to the entry if your change includes a DB migration
  • Add a high-risk This issue suggests changes that have a high-probability of breaking existing code label to the entry if your change includes a high-risk change (i.e. potential for performance impact or unexpected regression) that should be flagged
  • Updates unreleased work already in Changelog, no new entry necessary
• UX feedback:
  • All UX related changes have been reviewed by a designer
  • No UX review needed
• Followup issues:
  • Followup issues created
  • No followup issues
• Database migrations:
  • Ensure that your downrev is up to date with the latest revision on main
  • Ensure that your downgrade() migration is correct and works
    • If a downgrade migration is not possible for this change, please call this out in the PR description!
  • No migrations
• Documentation:
  • Documentation complete, PR opened in fidesdocs
  • Documentation issue created in fidesdocs
  • If there are any new client scopes created as part of the pull request, remember to update public-facing documentation that references our scope registry
  • No documentation updates required

[vercel]

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Project	Deployment	Actions	Updated (UTC)
fides-plus-nightly	Ready	Preview, Comment	Apr 20, 2026 1:42pm

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
fides-privacy-center	Ignored		Apr 20, 2026 1:42pm

[github-actions]

Title	Lines	Statements	Branches	Functions
admin-ui		6.17% (2709/43842)	5.38% (1340/24891)	4.24% (550/12962)
fides-js		78.98% (1962/2484)	65.55% (1214/1852)	72.57% (336/463)
privacy-center		85.97% (331/385)	81.36% (179/220)	78.87% (56/71)

[lucanovera]

Confirmed in the preview link that the bug is fixed! Ship it.