The useLocalStorage hook synchronizes state between windows. In the
case of the activities tabs, we don't want this state synchronized,
otherwise changing a tab in one window would change the tab in all
open windows.
Instead, we can use sessionStorage so that the state persists when
refreshing or duplicating a browser tab. Local storage is still used
as the default value so that any new window that is opened will use
the last selected state.
Issue: https://github.com/pybricks/support/issues/807
This is a minor breaking change for users that don't have dark mode
set to the default value since the localStorage key has changed (hard-
coded in 3rd party library).
David Lechner