[Accessibility] In WPF Narrator is not reading the items of an Editable ComboBox

### Description

.NET Core Version: net8
Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc...)? No

This issue has been opened again https://github.com/dotnet/wpf/issues/7005, however we noticed that the app does not send the events that the Narrator expects.

The attached video comes from our application, but we can also reproduce in the attached sample app.

This only reproduces when the ComboBox's IsEditable is True, and we have no customizations in the area.

[WpfApp2_combobox_isEditableBreaksNarratorFocus_bug.zip](https://github.com/user-attachments/files/19388012/WpfApp2_combobox_isEditableBreaksNarratorFocus_bug.zip)

### Reproduction Steps

Create an editable ComboBox with some items.
Navigate using Narrator

### Expected behavior

Narrator does not move to the items

### Actual behavior

Narrator should move to the items

### Regression?

_No response_

### Known Workarounds

_No response_

### Impact

_No response_

### Configuration

_No response_

### Other information

_No response_