[A11Y] Resource Explorer is unusable for screen reader users

### 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?

Yes, when the Managed Resources Editor was the default

### Issue description

If you double click or press Enter on a .resx file in the Solution Manager the Resource Explorer opens.
When you try to navigate it with the keyboard and a screen reader you won't be able to edit string resources as you could with the Managed Resources Editor that's marked as legacy.
At least, this is my experience. It might be possible to use it but then, at least I, need some kind of guide on how to use it with the keyboard supported by a screen reader.

It's still possible to open .resx files in the Managed Resources Editor by selecting Open With in the context menu and there select Managed Resources Editor. This is unpreferable but a workaround.
The simples solution would be to add a checkbox in the Open With dialog that sets the selected editor as the default one.

### Steps to reproduce

1. Start a screen reader such as Narrator, NVDA or JAWS.
2. Start Visual Studio and open a project where you have an existing .resx file with text entries.
3. Press Ctrl + Alt + L to focus the Solution Manager and navigate to your .resx file with text entries and press Enter.
4. Try to use the keyboard to get to the grid with the entries and edit existing entries and add new ones.

### Diagnostics

_No response_