New Content builder fails when using Artifacts output layout

Prerequisites

• I have verified this issue is present in the develop branch
• I have searched open and closed issues to ensure it has not already been reported.

MonoGame Version

MonoGame 3.8.5

Which MonoGame platform are you using?

All of them.

Operating System

All

Description

When using artifact output layout (https://learn.microsoft.com/en-us/dotnet/core/sdk/artifacts-output) the new content builder targets does not work.

Steps to Reproduce

Add a Directory.Build.props file with the following content.

<Project>
  <PropertyGroup>
    <UseArtifactsOutput>true</UseArtifactsOutput>
  </PropertyGroup>
</Project>

Minimal Example Repo

https://github.com/distantcam/ContentBuilderExample

Expected Behavior

The build succeeds.

Resulting Behavior

The build fails.

Files

No response