Scrollbar either normally sized or at window's edge

### Description

Editor scrollbar without pixel hunting. Either of traditional width or at the window's edge (to the right of the overview column).

### Use case/motivation

Scrollbars are getting smaller. I guess that the primary reasons are certain multimedia aesthetics, documents whose size changes dynamically or are never very long (so that the mouse wheel works well), dynamic width-sensitive layouts or sometimes small space. Then, there is an important reason or current UI convention of putting the scrollbar at the very window's edge so that a maximized window allows a fast gesture to access to the scrollbar with the mouse, event if the scrollbar is thin.

No single of these reasons seems to be the case for Netbeans Editor. Yet, NB inherits the size and intensity decrease of scroll bars from the widget libraries. Many of these reasons are the case for a browser yet Chrome has a scrollbar twice as wide, twice as dark and actually at the window's edge.

### Related issues

_No response_

### Are you willing to submit a pull request?

Yes

### Code of Conduct

Yes

The issue does not name any files, tests, or entry points. Start by reproducing the editor scrollbar behavior in a maximized NetBeans window and locating the editor scrollbar implementation; done means providing the requested traditional-width or window-edge behavior without pixel hunting.

Written by the indexing model from the issue text.