Blazor page relocation causes non compilable project

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the bug

1. Initialize a blazor project.
2. Create a blazor page (in /Pages)
Example.razor:
```c-sharp
@page "/Example"

Example

@code {

protected override void OnInitialized()
{
base.OnInitialized();
Console.Out.Write("this should run, and compile");
}
}
```
3. Move the code to a code behind class

Pages/Example.razor.cs
```c-sharp
namespace Project.Pages;

public partial class Example
{
protected override void OnInitialized()
{
base.OnInitialized();
Console.Out.Write("this should run, and compile");
}
}
```

4. Move the Example.razor from /Pages to /Areas/Core/Pages and change the namespace to Project.Areas.Core.Pages
5. Run the project.
6. Find that the project is not compiling due to `no suitable method to overide in Example.razor.cs`

### Expected Behavior

Relocating a blazorpage with code-behind should compile, like a relocated blazorpage with code within is compiling

### Steps To Reproduce

S.a.

### Exceptions (if any)

_No response_

### .NET Version

6.0.104

### Anything else?

Microsoft (R) Build Engine version 17.0.0+c9eb9dd64 for .NET