Add global search to website navbar

[preett13]

Summary

This PR adds the existing Docsy search component to the global website navigation bar so users can access search functionality from any page.

Changes

• Added the existing search-input.html partial to navbar.html
• Made search available outside the documentation section
• Preserved existing navbar functionality

Why

This improves navigation and discoverability, especially for new users who want to quickly find content without first navigating to the documentation pages.

[google-oss-prow]

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[google-oss-prow]

Hi @preett13. Thanks for your PR.

I'm waiting for a kubeflow member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[github-actions]

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[preett13]

Hi @franciscojavierarceo could you please review this pr ? Thanks .

[Arhell]

/ok-to-test