.NET version

.NET SDK 10.0.100-alpha.1.24573.1

Did it work in .NET Framework?

Yes

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

The DataSource property was enabled since .NET 9.0

Issue description

No "(none)" text display for the DataSource property in PropertyGrid control

.NET :

.NET Farmework:

Steps to reproduce

1. Create a .NET WinForms project
2. Add a PropertyGrid & ComboBox control on the Form1.cs[Design]
3. Select the comboBox1 as Object for propertyGrid1
4. Build & run the project
5. Observe the DataSource property value