Update Templates.Mvc.Tests Helix Timeout (#55981)

These tests are timing-out and all helix builds are red. In parallel I am trying to understand why they are slow and if there are ways to get them faster.

Author: sebastienros

src/ProjectTemplates/test/Templates.Mvc.Tests/Templates.Mvc.Tests.csproj

@@ -19,7 +19,7 @@
     <TestTemplateCreationFolder>TestTemplates\</TestTemplateCreationFolder>
     <RestoreFolderName>Mvc</RestoreFolderName>
     <TestDependsOnAspNetPackages>true</TestDependsOnAspNetPackages>
-    <HelixTimeout>01:50:00</HelixTimeout>
+    <HelixTimeout>02:30:00</HelixTimeout>
   </PropertyGroup>
 
   <ItemGroup>