Scroll is not locked to a nested ScrollArea

[juancampa]

Is your feature request related to a problem? Please describe.

When you hit the bottom (or top) of an nested ScrollArea it shouldn't immediately scroll the outer ScrollArea.

Egui behavior:

Screenshot.2024-12-02.at.20.07.24.mp4

Browser behavior:

Screenshot.2024-12-02.at.20.11.51.mp4

In the browser, when you hit the bottom and continue scrolling, the scroll is kept "locked" to the inner area unless:

1. About a second have elapsed, or
2. You move the mouse and continue scrolling down

This allows you to confidently scroll up and down nested scroll areas.

Describe the solution you'd like

Lock the scroll to a specific ScrollArea until the above conditions are met