Fix resolution for ReferenceBlazorBuildFromSource

Author: captainsafia

src/Components/WebAssembly/Build/test/Microsoft.AspNetCore.Components.WebAssembly.Build.Tests.csproj

@@ -40,7 +40,7 @@
     <HelixContent Include="..\testassets\**\*" />
     <HelixContent Include="$(RepoRoot)global.json" />
     <HelixContent Include="$(RepoRoot)eng\Versions.props" />
-    <HelixContent Include="$(RepoRoot)\src\Components\Blazor\Build\src\ReferenceBlazorBuildFromSource.props"/>
+    <HelixContent Include="$(RepoRoot)\src\Components\WebAssembly\Build\src\ReferenceBlazorBuildFromSource.props"/>
   </ItemGroup>
 
   <ItemGroup>

src/Components/WebAssembly/Build/testassets/Directory.Build.props

@@ -8,7 +8,7 @@
       <ComponentsRoot>$(RepoRoot)src\Components\</ComponentsRoot>
       <BlazorBuildRoot>$(ComponentsRoot)WebAssembly\Build\src\</BlazorBuildRoot>
       <ReferenceBlazorBuildFromSourceProps Condition="'$(IsHelixJob)' != 'true'">$(BlazorBuildRoot)ReferenceBlazorBuildFromSource.props</ReferenceBlazorBuildFromSourceProps>
-      <ReferenceBlazorBuildFromSourceProps Condition="'$(ReferenceBlazorBuildFromSourceProps)' == ''">..\..\ReferenceBlazorBuildFromSource.props</ReferenceBlazorBuildFromSourceProps>
+      <ReferenceBlazorBuildFromSourceProps Condition="'$(ReferenceBlazorBuildFromSourceProps)' == ''">$(MSBuildThisFileDirectory)\..\src\ReferenceBlazorBuildFromSource.props</ReferenceBlazorBuildFromSourceProps>
 
 
       <!-- Workaround for https://github.com/dotnet/aspnetcore/issues/17308 -->