Backport Bugzilla 1834307 and hide smooth-scroll UX
links
- yay FF115+ [1832598](https://bugzilla.mozilla.org/show_bug.cgi?id=1832598) Default enable smooth scrolls when resisting fingerprinting
- not verified [1834307](https://bugzilla.mozilla.org/show_bug.cgi?id=1834307) Smooth scrolls are disabled if the user prefers-reduced-motion regardless of fingerprint resistance
- you need to restart the browser for changes to take effect
- test (until I add it to TZP): https://dlrobertson.com/examples/scrollinto-view-scrollend.html
issue