[stable32] fix(Timeline): Scroll to top of app content on route change

[backportbot]

Backport of #3286

Warning, This backport's changes differ from the original and might be incomplete ⚠️

Todo

• Review and resolve any conflicts
• Amend HEAD commit to remove the line stating to skip CI

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 2.22%. Comparing base (ab4ac51) to head (c0805c7).
⚠️ Report is 3 commits behind head on stable32.

Additional details and impacted files

@@           Coverage Diff            @@
##           stable32   #3306   +/-   ##
========================================
  Coverage      2.22%   2.22%           
========================================
  Files           107     107           
  Lines          6572    6572           
  Branches        121     121           
========================================
  Hits            146     146           
  Misses         6421    6421           
  Partials          5       5           

☔ 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.

[artonge]

/compile /