Update Microsoft.AspNetCore.Components.E2ETests.csproj

Author: HaoK

src/Components/test/E2ETest/Microsoft.AspNetCore.Components.E2ETests.csproj

@@ -38,7 +38,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <HelixPreCommand Include="call npm i yarn;yarn install" />
+    <HelixPreCommand Include="call npm i yarn;call node_modules\.bin\yarn install" />
     <HelixContent Include="package.json" />
     <HelixContent Include="yarn.lock" />
     <!-- This is currently windows only -->