Avalonia Project Library preview selects wrong class for preview, causes InvalidOperationException

[finlaybob]

Describe the bug

Same issue as Rider Plugin
ForNeVeR/AvaloniaRider#301

Maybe it's not the plugins and is another issue

The previewer doesn't use the project that the file is part of in the previewer, it's using the executable project that references the library project, and when it's not finding the right method it self destructs.

The UI part of my app needs to be optional and based on configuration, this works at runtime, but being unable to preview is a bit of a blocker.

To Reproduce

• Create a new solution
• Create a console app, ZZBase
• Create an avalonia .net app ZZUi
  • change ZZUi.csproj OutputType from WinExe to Library
  • Make Program public
  • Remove [STAThread] Attribute from ZZUi.Program.Main
• Reference ZZUi from ZZBase
• Call ZZUi.Program.Main(args);

Run the program and it should start the app as expected.

Open MainWindow.axaml, it should show the Process Exited error.

Output window should show the stacktrace provided.

AvaloniaVS plugin version

11.1

Avalonia version

11.0.2

Visual Studio version

17.7.3

Relevant log output

15:30:59.136 [Information] 0 Starting previewer process for '"C:\Projects\AvaTest\ZZBase\bin\Debug\net6.0\ZZBase.dll"'
15:30:59.145 [Information] 38960 Started previewer process for '"C:\Projects\AvaTest\ZZBase\bin\Debug\net6.0\ZZBase.dll"'. Waiting for connection to be initialized.
15:30:59.368 [Information] 38960 Connection initialized
15:30:59.368 [Error] 38960 <= "Unhandled exception. System.InvalidOperationException: Unable to create AppBuilder from type \"ZZBase.Program\". Input type either needs to have BuildAvaloniaApp -> AppBuilder method or inherit Application type."
15:30:59.380 [Error] 38960 <= "   at Avalonia.AppBuilder.Configure(Type entryPointType)"
15:30:59.399 [Error] 38960 <= "   at Avalonia.DesignerSupport.Remote.RemoteDesignerEntryPoint.Main(String[] cmdline)"
15:30:59.400 [Error] 38960 <= "   at Avalonia.Designer.HostApp.Program.Main(String[] args)"

Additional context

No response

[finlaybob]

Adding small MVE zip for reproducing the issue

AvaTest.zip