Temporarily suppress CS8002 error (#2462)

Author: dmytrostruk

dotnet/Directory.Build.props

@@ -8,7 +8,7 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <LangVersion>latest</LangVersion>
     <Nullable>enable</Nullable>
-    <NoWarn>$(NoWarn);NU5128</NoWarn>
+    <NoWarn>$(NoWarn);NU5128;CS8002</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <TargetFrameworksCore>net10.0;net9.0;net8.0</TargetFrameworksCore>
     <TargetFrameworks>$(TargetFrameworksCore);netstandard2.0;net472</TargetFrameworks>

dotnet/src/Microsoft.Agents.AI.Anthropic/Microsoft.Agents.AI.Anthropic.csproj

@@ -4,7 +4,6 @@
     <VersionSuffix>preview</VersionSuffix>
     <ImplicitUsings>enable</ImplicitUsings>
     <InjectSharedThrow>true</InjectSharedThrow>
-    <NoWarn>$(NoWarn);CS8002</NoWarn>
   </PropertyGroup>
 
   <Import Project="$(RepoRoot)/dotnet/nuget/nuget-package.props" />