Node.js® 25.0.0 & localStorage

Between Oct, 13th and Oct, 20th 2025, version 25.0.0 of Node.js® was published, and latest node alpine image, which our CI uses, has changed accordingly.
However, Oct, 20th weekly build broke, because some unit tests became red.

On my dev machine, running the whole test suite without any modification and all dependencies in their last versions works like a charm, provided I run it with Node.js® 24.10.0 (which is currently the latest 24.x version). However, as soon as I switch version to 25.0, it breaks.