Update Microsoft.AspNetCore.Components.E2ETests.csproj

Author: HaoK

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

@@ -13,6 +13,7 @@
 
     <GenerateLoggingTestingAssemblyAttributes>false</GenerateLoggingTestingAssemblyAttributes>
     <TestDependsOnNode>true</TestDependsOnNode>
+    <TestDependsOnYarn>true</TestDependsOnYarn>
   </PropertyGroup>
 
   <ItemGroup>
@@ -55,7 +56,6 @@
   </Target>
 
   <ItemGroup>
-    <HelixPreCommand Include="call npm.cmd i yarn;call yarn install" />
     <HelixContent Include="package.json" />
     <HelixContent Include="yarn.lock" />
     <!-- This is currently windows only -->