JScrollBar: hide track if system settings set (mac, windows, etc)

[VISTALL]

Windows 10 + Windows 11 (and later)

Registry option HKEY_CURRENT_USER\Control Panel\Accessibility\DynamicScrollbars

macOS

https://developer.apple.com/documentation/appkit/nsscroller/preferredscrollerstyle

https://developer.apple.com/documentation/appkit/nsscroller/style - overlay will hide track

Linux

Looks like GNOME has this option too

https://www.linuxuprising.com/2019/09/how-to-disable-gnomes-overlay.html