Fix: `scroll_with_delta()` for `ScrollArea::vertical()` and `ScrollArea::horizontal()`

[rustbasic]

Fix: scroll_with_delta() for ScrollArea::vertical() and ScrollArea::horizontal()

We need to do this in order for ScrollArea::vertical() and ScrollArea::horizontal() to work even where they are divided or nested.

Pull requests :

• Related #4303
• Related #4305
• Related #4584