Update the sign check to remove the exclusions but only check on signed builds

Author: marcpopMSFT

src/Installer/redist-installer/targets/BundledManifests.targets

@@ -50,7 +50,7 @@
   </ItemGroup>
 
   <Target Name="ValidateBundledManifestSigning"
-          Condition=" '$(OS)' == 'Windows_NT' and '$(Architecture)' != 'arm' ">
+          Condition=" '$(OS)' == 'Windows_NT' and '$(Architecture)' != 'arm' and '$(Sign)' == 'true' ">
     <PropertyGroup>
       <SignCheckExe>$(PkgMicrosoft_DotNet_SignCheck)\tools\Microsoft.DotNet.SignCheck.exe</SignCheckExe>
       <SignCheckLog Condition="'$(SignCheckLog)' == ''">$(ArtifactsLogDir)\workloadmanifestsigncheck.log</SignCheckLog>
@@ -60,7 +60,7 @@
     <ItemGroup>
       <!-- Don't try to validate signing for workload manifests that will be signed as part of post-build signing -->
       <BundledManifestsToValidateSigning Include="@(BundledManifests)"
-        Exclude="Microsoft.NET.Workload.Mono.ToolChain.Current;Microsoft.NET.Workload.Mono.ToolChain.net6;Microsoft.NET.Workload.Mono.ToolChain.net7;Microsoft.NET.Workload.Mono.ToolChain.net8;Microsoft.NET.Workload.Emscripten.Current;Microsoft.NET.Workload.Emscripten.net6;Microsoft.NET.Workload.Emscripten.net7;Microsoft.NET.Workload.Emscripten.net8;Microsoft.NET.Sdk.Aspire">
+        Exclude="Microsoft.NET.Sdk.Aspire">
         <RestoredMsiPathInNupkg>$([MSBuild]::NormalizePath($([System.IO.Directory]::GetFiles('%(RestoredMsiNupkgContentPath)/data/', '*$(MsiArchitectureForWorkloadManifests).msi'))))</RestoredMsiPathInNupkg>
       </BundledManifestsToValidateSigning>