PopupSecurityHelper.ForceMsaaToUiaBridge causes FileNotFoundException

### Description

I've gotten several reports from users that crash with this exception:

```
System.IO.FileNotFoundException:
File name: 'Accessibility, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
at System.Windows.Controls.Primitives.Popup.PopupSecurityHelper.ForceMsaaToUiaBridge(PopupRoot popupRoot)
at System.Windows.Controls.Primitives.Popup.CreateWindow(Boolean asyncCall)
at System.Windows.Controls.Primitives.Popup.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
...
```

https://github.com/RandomEngy/VidCoder/issues/1093, https://github.com/RandomEngy/VidCoder/issues/1136

It happens on a popup, in one case with a tooltip and in another case on a menu dropdown using the Fluent Ribbon WPF library. I've never seen this crash happen myself; and these actions are quite common in regular usage of the program.

Maybe addressing https://github.com/dotnet/wpf/issues/5807 would fix this?

### Reproduction Steps

Open a popup (not consistent)

### Expected behavior

No crash

### Actual behavior

Crash with FileNotFound exception

### Regression?

_No response_

### Known Workarounds

_No response_

### Impact

_No response_

### Configuration

.NET 6.0
x64
I don't know if it's specific to this configuration; I've only gotten a few bug reports.

### Other information

_No response_