Pass template tests when project reference contains ".db"

[halter73]

This probably only affects the Blazor template test since it's the only one with the ProjectReference to the randomly named client, but I decided to update the pattern for MVC and Razor too.

Assert.DoesNotContain() Failure
Found:    .db
In value: <Project Sdk="Microsoft.NET.Sdk.Web">


        <PropertyGroup>
          <TargetFramework>net9.0</TargetFramework>
          <Nullable>enable</Nullable>
          <ImplicitUsings>enable</ImplicitUsings>
        </PropertyGroup>
      
        <ItemGroup>
          <ProjectReference Include="..AspNet.dbbwu3mcwvuc.ClientAspNet.dbbwu3mcwvuc.Client.csproj" />
          <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="9.0.0-ci" />
        </ItemGroup>
      
      </Project>

   at Templates.Mvc.Test.BlazorTemplateTest.BlazorWebTemplate_Core(String[] args) in /_/src/ProjectTemplates/test/Templates.Mvc.Tests/BlazorTemplateTest.cs:line 80
--- End of stack trace from previous location ---

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