Build: Fix release pipeline and local build failure (#45211)

## Summary of the Pull Request
Release pipeline is keeping failed, and local build failed at ut.

This pull request introduces changes to improve how test projects are
handled during release builds, ensuring that test code is not compiled
or analyzed when not needed - in doing release build, to - succeed the
execution and reduce built time.

And, to upgrade from VS17 to VS18 in cmdpal sdk build, this is to keep
consistency with all other build step


<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [ ] Closes: #xxx
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
issues) -->
- [ ] **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

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
Local build & release pipeline build should all pass:

Local build:
<img width="1815" height="281" alt="image"
src="https://github.com/user-attachments/assets/f350cf3f-b856-432d-97f3-e392d38ef7fa"
/>

Release pipeline is working too:
<img width="1195" height="163" alt="image"
src="https://github.com/user-attachments/assets/ce58de38-f0fb-45ad-9d70-2b8eb1c4db60"
/>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/modules/cmdpal/Core/Microsoft.CmdPal.Core.ViewModels/Microsoft.CmdPal.Core.ViewModels.csproj

@@ -1,5 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\CoreCommonProps.props" />
+
+  <PropertyGroup>
+    <EnableCoreMrtTooling>false</EnableCoreMrtTooling>
+  </PropertyGroup>
 	
   <ItemGroup>
     <PackageReference Include="CommunityToolkit.Common" />

src/modules/cmdpal/extensionsdk/Microsoft.CommandPalette.Extensions.Toolkit/Microsoft.CommandPalette.Extensions.Toolkit.csproj

@@ -84,7 +84,13 @@
     <WarningsNotAsErrors>IL2081;$(WarningsNotAsErrors)</WarningsNotAsErrors>
   </PropertyGroup>
 
-  <ItemGroup>
+  <!-- InternalsVisibleTo with public key for CI builds (signed assemblies) -->
+  <ItemGroup Condition="'$(CIBuild)'=='true'">
     <InternalsVisibleTo Include="Microsoft.CommandPalette.Extensions.Toolkit.UnitTests, PublicKey=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" />
   </ItemGroup>
+
+  <!-- InternalsVisibleTo without public key for local builds (unsigned assemblies) -->
+  <ItemGroup Condition="'$(CIBuild)'!='true'">
+    <InternalsVisibleTo Include="Microsoft.CommandPalette.Extensions.Toolkit.UnitTests" />
+  </ItemGroup>
 </Project>