[BUG] CommandBehavior not found when using global xmlns

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Did you read the "Reporting a bug" section on Contributing file?

- [x] I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug

### Current Behavior

NOTE: THIS IS NOT A BUG, BUUT I DID NOT KNOW WHERE TO PUT IT

I made my global file like this

`//
// Tus namespaces
//
[assembly: XmlnsDefinition("http://schemas.microsoft.com/dotnet/maui/global", "TaskManagerApp.Controls")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/dotnet/maui/global", "TaskManagerApp.Models")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/dotnet/maui/global", "TaskManagerApp.ViewModels")]

//
// CommunityToolkit.Maui (TODOS los namespaces necesarios)
//
[assembly: XmlnsDefinition("http://schemas.microsoft.com/dotnet/maui/global", "CommunityToolkit.Maui")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/dotnet/maui/global", "CommunityToolkit.Maui.Behaviors")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/dotnet/maui/global", "CommunityToolkit.Maui.Extensions")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/dotnet/maui/global", "CommunityToolkit.Maui.Core")]`

The app work perfectly

but the error is that appear is annoying

The type 'EventToCommandBehavior' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built.

also if you create a Init method in your vm, intelisense dont work

### Expected Behavior

VS dosent output any errors

### Steps To Reproduce

Create a project
create a globbal xmlns file like mane

put a eventToCommand

### Link to public reproduction project repository

https://github.com/eduardoagr/TaskManagerApp

### Environment

```markdown
- .NET MAUI CommunityToolkit:
- OS:
- .NET MAUI:
```

### Anything else?

_No response_

Start with the linked TaskManagerApp reproduction and its global xmlns file, then reproduce the EventToCommandBehavior error and missing IntelliSense for a ViewModel Init method. Compare the behavior with and without the global xmlns definitions; done means the app still builds and Visual Studio reports no false errors or missing IntelliSense.

Written by the indexing model from the issue text.