Add autocomplete and interactive filter pickers to Commit Graph search

[eamodio]

Summary

Enhances the search experience on the Commit Graph with autocomplete suggestions and interactive filter pickers for authors, references, and files/folders.

Impact

• Improves discoverability of search operators and available filter values
• Reduces friction when building complex search queries
• Provides a more intuitive and guided search experience

Validation

• Verify autocomplete suggestions appear when typing in the Graph search box
• Verify filter pickers open for authors, references, and files/folders
• Verify selected values are properly inserted into the search query

Risk

Low - Additive feature that enhances existing search functionality

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Issue created retroactively via commit audit

[eamodio]

Closed by c329894, d3348af

[d13]

@eamodio ran into an issue -

For all filter pickers: pressing enter won't start the search unless I close (via escape key) the auto-complete menu showing "Choose {picker-type}"

[d13]

Had the wrong pre-release, this is verfied.

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.