[Tests] More consistent naming (#40754)

- [x] **Tests:** Added/updated and all pass
- [x] **Dev docs:** Added/updated

<img width="460" height="1017" alt="image"
src="https://github.com/user-attachments/assets/e72bf221-0875-48c3-b790-4ab1182c7d3a"
/>

I haven't touched the Run module, since we may deprecate it.

Closes: #40788

src/modules/Hosts/Hosts.Tests/HostsEditor.UnitTests.csproj

@@ -0,0 +1,31 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- Look at Directory.Build.props in root for common stuff as well -->
+  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+  
+  <PropertyGroup>
+    <IsPackable>false</IsPackable>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+    <OutputPath>$(SolutionDir)$(Platform)\$(Configuration)\tests\Hosts.Tests\</OutputPath>
+    <RootNamespace>Hosts.Tests</RootNamespace>
+    <AssemblyName>PowerToys.Hosts.Tests</AssemblyName>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Moq" />
+    <PackageReference Include="MSTest" />
+    <PackageReference Include="System.IO.Abstractions" />
+    <PackageReference Include="System.IO.Abstractions.TestingHelpers" />
+    <PackageReference Include="System.Diagnostics.EventLog">
+      <!-- This package is a dependency of Microsoft.Extensions.Logging.EventLog, but we need to set it here so we can exclude the assets, so it doesn't conflict with the 8.0.1 dll coming from .NET SDK. -->
+      <ExcludeAssets>runtime</ExcludeAssets> <!-- Should already be present on .net sdk runtime, so we avoid the conflicting runtime version from nuget -->
+    </PackageReference>
+    <!-- HACK: CmdPal uses CommunityToolkit.Common directly. Align the version. -->
+    <PackageReference Include="CommunityToolkit.Common" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\HostsUILib\HostsUILib.csproj" />
+  </ItemGroup>
+
+</Project>