Add unit test for About, Demo and Faq ui component

[abhishek-2k23]

Description

The About, Demo and Faq components in the ui package currently lack corresponding test files. To maintain test coverage and ensure stability, we need to add unit tests for these components.

Expected Behavior

• Each component (About and Demo) should have a dedicated test file.
• Tests should verify component rendering, props handling, and expected behavior.
• Ensure coverage aligns with project standards.

Steps to Reproduce

• Create test files inside tests folder of ui package:
  - About.test.jsx
  - Demo.test.jsx
  - Faq.test.jsx
• Use Vitest for writing and running tests.
• Follow existing test patterns within the UI package.

Screenshots or Recordings

No response

Confirmation Checklist

• I have searched for similar issues issues and made sure no duplicate issue exists..
• I have provided all the necessary information to understand and reproduce the bug.