Hydration mismatch warning in Testimonials component when using SSG

### Is there an existing issue for this? - [x] I have searched the existing issues ### Description of the bug When the website is built using SSG, the `Testimonials` component selects a random testimonial using `Math.random()` during render. Because this logic runs both: - at build time (server-side rendering) - and again during client-side hydration the rendered content may differ between server and client. This results in a React hydration mismatch warning in the browser console. ### Steps To Reproduce 1. `yarn build` 2. `yarn serve` 3. Open the homepage in a browser 4. Open the browser developer console 5. Observe a hydration mismatch warning ### Expected behavior The website should hydrate without React warnings. ### Screenshots / Logs <img width="743" height="167" alt="Image" src="https://github.com/user-attachments/assets/da9d6b5e-b2c7-4c9c-9080-f61ec9c62a11" /> ### Software information - Operating system: macOS Tahoe 26.3 - Rust version: 1.91.0 - Project version: 2.12.0 ### Additional context This issue occurs because `Math.random(`) is executed during render. In an SSG environment, this leads to non-deterministic output between server and client.