test(utils): verify query parameter debouncing

[yadavayush834]

Description

Added a utility-level test verifying that rapid synchronous query inputs are debounced correctly. Only the final value resolves once after the timer expires.

Fixes #1557

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Visual Preview

Not applicable. This PR only adds a utility test.

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[Copilot]

Pull request overview

Note

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Adds a unit test for the useDebounce hook to verify that rapid value changes are resolved exactly once after the debounce interval elapses.

Changes:

• New test file using Vitest and React Testing Library
• Uses fake timers to assert behavior at the 299ms and 300ms boundaries
• Wraps the hook in an observer helper that surfaces the debounced value via callback

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