fix(uds): allow custom styles for Banner

[stdavis]

My use case is that I want to remove the margin.

[Copilot]

Pull Request Overview

This PR enhances the Banner component by adding support for custom styling through a className prop. The main purpose is to allow consumers to override or extend the default styles, particularly to address the use case of removing the default margin.

Key Changes:

• Added optional className prop to Banner component
• Implemented twMerge to properly merge custom classes with default styles

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[github-actions]

Visit the preview URL for this PR (updated for commit 1257fbc):
Firebase Preview: https://ut-dts-agrc-kitchen-sink-dev--fix-stay-classy-3fc63wie.web.app
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[Copilot]

Pull Request Overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

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