Fix: Limit when to prevent the default wheel event (fix #1848)

[gpetrioli]

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Description

The code prevents the default wheel event only if there is available scroll inside the grid that will happen.

This means that when we have reached the end of the scroll in all directions, it will allow the wheel event to bubble higher and be caught by the browser so that the page will continue scrolling.

Fixes #1848

[gpetrioli]

Just a heads up,

it looks like PR #1816 introduced a very greedy event handler, that completely consumes all wheel events that happen while the mouse is over a grid.

This fix introduces some checks that will allow an event to bubble to the top (not get consumed by the handler) if the grid does not need to consume it (if there is no scroll to happen in the direction the wheel events is occurring).

[stale[bot]]

This issue has been automatically marked as inactive because there hasn’t been much going on it lately. It is going to be closed after 7 days. Thanks!