Test filter route

[Mbeaulne]

Description

Added a new Filter Test page to showcase and test pipeline run filter components. This page demonstrates both the integrated PipelineRunFiltersBar and individual filter components with local state management. Updated knip.json to ignore the filter-related components and hooks from unused code analysis.

Type of Change

• New feature
• Documentation update

Checklist

• I have tested this does not break current pipelines / runs functionality
• I have tested the changes on staging

Screenshots (if applicable)

N/A

Test Instructions

1. Navigate to /filter-test to view the new test page
2. Test the integrated filter bar with URL synchronization
3. Try the individual filter components (status filter, date picker, annotation filter)
4. Verify that the URL parameters update correctly when using the filter bar

Additional Comments

This page serves as both a testing ground and documentation for our filter components, making it easier to develop and debug filter functionality.

[Mbeaulne]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Test filter route #1709 👈 (View in Graphite)
• Filter Bar #1708 : 1 other dependent PR (#1711 )
• Add created by me filter #1713
• Status filter #1707
• Annotation Filter input #1706
• Date picker #1705
• Add pipeline run filters bar with search functionality #1734
• Add useRunSearchParams hook for pipeline run filtering #1704
• master

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