enable TestingPlatformDotnetTestSupport

Author: Bertk

test/coverlet.core.coverage.tests/coverlet.core.coverage.tests.csproj

@@ -1,10 +1,11 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$(RepoRoot)src\coverlet.msbuild.tasks\coverlet.msbuild.props" />
 
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <UseMicrosoftTestingPlatformRunner>true</UseMicrosoftTestingPlatformRunner>
+    <TestingPlatformDotnetTestSupport>true</TestingPlatformDotnetTestSupport>
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
     <NoWarn>$(NoWarn);CS8002</NoWarn>