fix: Unhandled error after new MAUI Hybrid Blazor App Solution created and Manual install of Fluent

[B-Cantu]

🐛 Bug Report

I created a new MAUI Hybrid Application solution using Visual Studio and DotNet 9

• FluentUI was installed using:

dotnet add package Microsoft.FluentUI.AspNetCore.Components 

and the Icons and emoji's using

 dotnet add package Microsoft.FluentUI.AspNetCore.Components.Icons
 dotnet add package Microsoft.FluentUI.AspNetCore.Components.Emoji

• Built and ran sample application was this worked fine and the Home.razor page was displayed

• The setup document was read, "Blazor Hybrid" and I saw the note:

Note: The workaround below only applies to .NET 8 (and below). As of .NET 9 this workaround is no longer needed. If you have this workaround in place for .NET 9 your Blazor Hybrid project will not load.

• added to the _Imports.razor file @using Microsoft.FluentUI.AspNetCore.Components
• added to Home.Razor file the following:

<FluentCard>
    <h2>Hello World!</h2>
    <FluentButton Appearance="@Appearance.Accent">Click Me</FluentButton>
</FluentCard>

• Built successfully, No errors
• Application displayed as follows:

[vnbaaij]

We can't assess the issue without any source code. Please add a zip or link to a repo.