[DpiUnaware] The ListBox and CheckedListBox controls are not scaled well on 300% system DPI

[John-Qiao]

• .NET Core Version:
  .NET SDK 7.0.100-alpha.1.21568.2

• Have you experienced this same bug with .NET Framework?:
  No

Problem description:

The ListBox and CheckedListBox controls are not scaled well on 300% system DPI.

Expected behavior:

The ListBox and CheckedListBox controls should be scaled well on 300% system DPI.

Minimal repro:

1. Open the TestApp.zip on 300% DPI.
2. Change the ApplicationHighDpiMode to DpiUnAware in .csproj file, set AutoScaleMode = Font and font size from 9 to 10 for Form1 designer.
3. Run it.

More info:

1. This issue cannot repro under DpiUnAware & AutoScaleMode = dpi or none
2. This issue doesn't reproduce under PerMonitorV2 and SystemAware modes.