`RelayCommandAttribute` can't be used with interface and generic class

### Describe the bug

If you have an interface, without a generic type, that requires the implementation of an `ICommand` property it isn't possible to use the `RelayCommandAttribute` on a generic class that uses the generic type as parameter on the command method.
The `RelayCommandAttribute` generates a property of type `IRelayCommand` that doesn't satisfy the implementation of the interface.

### Regression

_No response_

### Steps to reproduce

```text
public interface ITest
{
ICommand TestSomethingCommand { get; }
}

public partial class Test : ITest
{
// Generates a property of type IRelayCommand, this doesn't satisfy ITest.ICommand
[RelayCommand]
private void TestSomething(T obj)
{
}
}
```

### Expected behavior

The generated property should be of type `ICommand` or `RelayCommandAttribute` should have an option to generate the property with of type `ICommand` instead of `IRelayCommand`.

### Screenshots

_No response_

### IDE and version

VS 2022, Rider

### IDE version

_No response_

### Nuget packages

- [ ] CommunityToolkit.Common
- [ ] CommunityToolkit.Diagnostics
- [ ] CommunityToolkit.HighPerformance
- [X] CommunityToolkit.Mvvm (aka MVVM Toolkit)

### Nuget package version(s)

8.2.2

### Additional context

_No response_

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