[DarkMode] the item lost dot line when using the mouse to expand the dropdown panel for the Dock/TextAlign/ImageAlign/CheckAlign properties

### .NET version

latest .NET SDK 10.0.1

### Did it work in .NET Framework?

No

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

Yes, the issue does not reproduce on .NET SDK 9.0

### Issue description

The items lost dot line when using the mouse to expand the dropdown panel for the Dock/TextAlign/ImageAlign/CheckAlign properties

https://github.com/user-attachments/assets/fdc582a0-8103-448d-817f-4a13b96dc909

### Steps to reproduce

1. Create a new Windows Forms application
2. Add a Button & a PropertyGrid control to the form
3. propertyGrid1 selected the button1 as object
4. Set app under Dark mode in program.cs file:
5. Application.SetColorMode(SystemColorMode.Dark);
6. Run the application
7. Use mouse to expand dropdown panel for the ImageAlign property
8. Observe the dot line for the items in the dropdown panel

**More info:**
The issue does not reproduce when using the keyboard to expand the dropdown panel, such as Enter keyboard or Alt + Down arrow