[Dark Mode] the HScroolBar/VScrollBar are not in dark mode

[Zheng-Li01]

.NET version

.NET SDK 9.0.100-rc.2.24428.4

Did it work in .NET Framework?

No

Did it work in any of the earlier releases of .NET Core or .NET 5+?

This is a new feature Dark Mode: #11857

Issue description

The HScroolBar/VScrollBar are not in dark mode, the issue also can reproduce on for the controls with scrollbar, such as checkedlistbox with scrollbar, and Form with scrollbar.

Steps to reproduce

1. Create a WinForms .NET application with HScroolBar/VScrollBar control
2. Enable DarkMode by Application.SetColorMode(SystemColorMode.Dark) in Program.cs file
3. Run application to observe

[Zheng-Li01]

Closed due to the issue does not reproduce on windows 11