Fix SBOM generation for VSIX projects (#6786)

Author: jeffkl

eng/pipelines/templates/Build_and_UnitTest.yml

@@ -239,15 +239,15 @@ steps:
   inputs:
     solution: "setup\\Microsoft.VisualStudio.NuGet.Core\\Microsoft.VisualStudio.NuGet.Core.vsmanproj"
     configuration: "$(BuildConfiguration)"
-    msbuildArguments: "/property:ManifestDirPath=$(Build.SourcesDirectory)/artifacts /binarylogger:$(Build.StagingDirectory)\\binlog\\16.GenerateVSManifestForVSIX.binlog"
+    msbuildArguments: "/property:ManifestDirPath=$(Build.ArtifactStagingDirectory)/sbom /binarylogger:$(Build.StagingDirectory)\\binlog\\16.GenerateVSManifestForVSIX.binlog"
   condition: "and(succeeded(),eq(variables['BuildRTM'], 'false'))"
 
 - task: MSBuild@1
   displayName: "Generate VSMAN file for Build Tools VSIX"
   inputs:
     solution: "setup\\Microsoft.VisualStudio.NuGet.BuildTools\\Microsoft.VisualStudio.NuGet.BuildTools.vsmanproj"
     configuration: "$(BuildConfiguration)"
-    msbuildArguments: "/property:IsVsixBuild=false /property:ManifestDirPath=$(Build.SourcesDirectory)/artifacts /binarylogger:$(Build.StagingDirectory)\\binlog\\17.GenerateVSManifestForToolsVSIX.binlog"
+    msbuildArguments: "/property:IsVsixBuild=false /property:ManifestDirPath=$(Build.ArtifactStagingDirectory)/sbom /binarylogger:$(Build.StagingDirectory)\\binlog\\17.GenerateVSManifestForToolsVSIX.binlog"
   condition: "and(succeeded(),eq(variables['BuildRTM'], 'false'))"
 
 - task: NuGetCommand@2