Make the notebook's scrollbar resizable

[uahnbu]

When I scroll within a notebook, the cell scroll down instead of the page. So usually I will move my mouse to the page scrollbar area instead. However, this area is very small and barely visible, so is very hard to hover my mouse onto.

In the normal text editor, I can adjust these settings to resize the scrollbar:

{
    "editor.scrollbar.verticalScrollbarSize": 30,
    "editor.scrollbar.horizontalScrollbarSize": 30
}

But these settings are not applicable to the notebook's scrollbars. It would be great if these settings are unified among all views.

Notebook vs. Text Editor