TreeView and ComboBox do not correctly display

### .NET version

Version: 6.0.300

### Did it work in .NET Framework?

No

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

Windows Forms TreeView and ComboBox controls, when used with Verdana Font, do not correctly display certain Latin-8 (ISO-8859-14: Celtic) characters. Certain characters are displayed as squares. E.g., Ḃḃ£ĊċḊ§Ẁ©ẂḋỲ®Ÿ appears as □□£Ċċ□§Ẁ©Ẃ□Ỳ®Ÿ . For the ComboBox the squares appear only in the drop-down. It works correctly with some fonts (Arial) but not with others (Arial Black). It doesn't occur on other common controls such as TextBox, Button, Label, CheckBox, RadioButton, CheckedListBox. Note: fixing it in .NET 5 won't help me because our software is at .NET 4.8

### Issue description


### Steps to reproduce

Add a Windows Forms App
Add a TreeView controls to the form
Change the TreeView's FontFamily to Verdana
Edit the TreeView's Nodes collection, and add a node with the text Ḃḃ£ĊċḊ§Ẁ©ẂḋỲ®Ÿ