'Data Attribution' link is not accessible using accessible using keyboard in map screen in windows.

What happened?

'Data Attribution' link is not accessible using accessible using keyboard in map screen in windows. 'Data Attribution' link should be accessible using keyboard tab key in map screen in windows.

https://github.com/user-attachments/assets/6b38438a-5592-4808-acef-aaa34db9e889

Reproduction steps

1. Open the URL: Sandcastle | CesiumJS in edge/chrome browser.
2. Map screen will open.
3. Press tab key to navigate on the page.
4. Verify whether 'Data Attribution' link is accessible using accessible using keyboard in map screen in windows or not.

Sandcastle example

https://sandcastle.cesium.com/standalone.html#c=bY1BawIxEIX/ypCTlpLg2exS8Cr0UPA0l5gd69DZiWSyK/bXF7VCCx7f4/ve4/FUaoMXSAYbMp5GONQyArp8S+jWqKi5qDWYmc5UoQOl8y/td7du8eA3RVtipYpuuUZ1ry5auwj1qABvfH+bqiy8D43Gk6RGFvZT/qLms9lViuGhxIFn4KF7sg5ZklmH7jCJfPA3oetjGHj+p0lJA+vn+0xV0uWKHFf99l5672M4rp5YrRTZp/pn8Qc

Environment

Browser: Edge (Version 150.0.4078.96), Chrome (Version 150.0.7871.182) CesiumJS Version: 1.143.0 Operating System: Windows 11 version 25H2 (OS Build 26200.8893)

AI acknowledgment

• I used AI to generate this issue report.
• (If the above is checked) I have reviewed the AI-generated content before submitting.