[Tests] Fix PowerToys.sln to make cmdpal unit tests listed in the Test folder (#40804)

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## Summary of the Pull Request
1. Just change the sln to show cmdpal unit test in the Tests folder.
2. Move cmdpal UITest into Tests folder

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## PR Checklist

- [ ] Closes: #xxx
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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Co-authored-by: Yu Leng (from Dev Box) <yuleng@microsoft.com>

src/modules/cmdpal/Tests/Microsoft.CmdPal.UITests/Microsoft.CmdPal.UITests.csproj

@@ -1,5 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
-	<Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+	<Import Project="..\..\..\..\Common.Dotnet.CsWinRT.props" />
 
 	<PropertyGroup>
 		<RootNamespace>Microsoft.CmdPal.UITests</RootNamespace>
@@ -21,6 +21,6 @@
 		<PackageReference Include="System.Net.Http" />
 		<PackageReference Include="System.Private.Uri" />
 		<PackageReference Include="System.Text.RegularExpressions" />
-		<ProjectReference Include="..\..\..\common\UITestAutomation\UITestAutomation.csproj" />
+		<ProjectReference Include="..\..\..\..\common\UITestAutomation\UITestAutomation.csproj" />
 	</ItemGroup>
 </Project>