fix: wrap scrollToIndex in requestAnimationFrame

[mxschll]

Description

Fixes incorrect scroll positioning in virtual lists by deferring scrollToIndex calls with requestAnimationFrame. This ensures virtual items are measured before scrolling occurs.

Related links, issue #, if available: n/a

How has this been tested?

Verified changes manually and in pipeline.

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.15%. Comparing base (a0df38d) to head (9fe8958).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4132      +/-   ##
==========================================
+ Coverage   97.13%   97.15%   +0.02%     
==========================================
  Files         873      873              
  Lines       25562    25788     +226     
  Branches     9239     9378     +139     
==========================================
+ Hits        24830    25055     +225     
- Misses        726      727       +1     
  Partials        6        6              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.