Less transforms in gameplay is always better.
This fixes repeat arrows animating completely incorrectly in the editor
(and probably gameplay when rewinding).
Originally this was an intentional choice (see
https://github.com/ppy/osu/pull/18088) when these controls were more
transparent and didn't for a solid toolbox area.
But this is no longer the case, so for now let's always block scroll to
match user expectations.
Closes#31262.