[A11Y] Property Editor drop down value pickers are sometimes hard to use with keyboard and screen reader

### Environment

VisualStudio.17.Preview/17.11.0-pre.5.0+35118.90

### .NET version

8.0

### Did this work in a previous version of Visual Studio and/or previous .NET release?

No

### Issue description

If you use the keyboard to edit property values in the Property Editor and you need to select a predefined value from a drop down you sometimes get an error message.

### Steps to reproduce

1. Start a screen reader such as Narrator, NVDA or JAWS.
2. Start Visual Studio and create a new WinForms application.
3. Open the form and add a DataGridView to it.
4. Press Esc to get rid of the task window.
5. Press F4 to go to the Property Editor.
6. Navigate to the ColumnHeadersHeightSizeModethe behavior for adjusting the column headers height. nivå 1 property.
7. Use Alt + Down arrow to open the drop down list to choose a property value.
8. Use the up and down arrows to move between the different values in the list.
9. You can also try to press F4 instead of Alt + Down arrow to open the editor for the particular property type.

### Diagnostics

_No response_