feat(ui): add prefers-reduced-motion support for accessibility

[Tugamer89]

What: Added a @media (prefers-reduced-motion: reduce) query to custom-javadoc.css to disable animations, transitions, and smooth scrolling for users who have requested reduced motion in their system preferences.

Why: To improve accessibility for users with vestibular disorders or motion sensitivities. The previous UI included smooth scrolling and animated tooltips/hover states that could be distracting or uncomfortable for some users.

Accessibility: Directly addresses an important accessibility feature (prefers-reduced-motion), ensuring that users who opt-out of animations have a safe and comfortable browsing experience while viewing the Autogex documentation.

---

PR created automatically by Jules for task 5284459248693209539 started by @Tugamer89

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud