Restore the warning as no unsigned assemblies are used

Author: alexeyzimarev

test/Directory.Build.props

@@ -5,7 +5,7 @@
         <IsPackable>false</IsPackable>
         <TargetFrameworks>net48;net8.0;net9.0;net10.0</TargetFrameworks>
         <Nullable>disable</Nullable>
-        <NoWarn>xUnit1033;CS8002</NoWarn>
+        <NoWarn>xUnit1033</NoWarn>
         <VSTestLogger>trx%3bLogFileName=$(MSBuildProjectName).trx</VSTestLogger>
         <VSTestResultsDirectory>$(RepoRoot)/test-results/$(TargetFramework)</VSTestResultsDirectory>
     </PropertyGroup>