Unclear errors on field with ObservableProperty

### Describe the bug

I have a wpf (core based) project, with net6.0 (with visual studio 2022 enterprise), where I installed from nuget the toolkit mvvm version 8.0.0. In the project I have a very basic class that is defined as partial and inherits ObservableObject (just like any guide that explains how to work with the toolkit's MVVM) and contains 3 fields
each wrapped respectively in an ObservableProperty attribute.
When I try to compile I get errors that I have no idea why they actually happen, the errors actually refer to cs g files that are dynamically created using the toolkit, I will give an example for example I have a field in the basic class (called AstroInfo) called star and on it I get an error below that directs it to the g.cs file
The type 'AstroInfo' already contains a definition for 'Star'
In addition to this, more unclear errors in relation to functions that describe events such as
'AstroInfo' already defines a member called 'OnStarChanging' with the same parameter
and-
A partial method may not have multiple defining

I would appreciate guidance in this regard

### Regression

_No response_

### Steps to reproduce

```text
using CommunityToolkit.Mvvm.ComponentModel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AstroMatch.Models
{
public partial class AstroInfo : ObservableObject
{
[ObservableProperty]
private string star;

[ObservableProperty]
private int degree;

[ObservableProperty]
private int hour;
}

}
```

### Expected behavior

The compilation goes without any errors

### Screenshots



### IDE and version

VS 2022

### IDE version

_No response_

### Nuget packages

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

### Nuget package version(s)

8.0.0

### Additional context

_No response_

### Help us help you

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