WinAppSDK upgrade time! (after .84 is verified stable) (#34622)

* upgrade time!

* looks like two got orphaned :/

* Fix Measure Tool window style to remove title bar and borders

* Fix spellchecker

* was tab :(

* Update src/modules/MeasureTool/MeasureToolUI/MeasureToolXAML/MainWindow.xaml.cs

Co-authored-by: Dustin L. Howett <duhowett@microsoft.com>

* added comment about CsWinRT upgrade to verify on next upgrade

---------

Co-authored-by: Jaime Bernardo <jaime@janeasystems.com>
Co-authored-by: Dustin L. Howett <duhowett@microsoft.com>

src/Common.Dotnet.CsWinRT.props

@@ -2,6 +2,7 @@
 <!-- Some items may be set in Directory.Build.props in root -->
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
+    <WindowsSdkPackageVersion>10.0.20348.38</WindowsSdkPackageVersion>
     <TargetFramework>net8.0-windows10.0.20348.0</TargetFramework>
     <TargetPlatformMinVersion>10.0.19041.0</TargetPlatformMinVersion>
     <SupportedOSPlatformVersion>10.0.19041.0</SupportedOSPlatformVersion>
@@ -33,4 +34,11 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Windows.CsWinRT" />
   </ItemGroup>
+
+  <!-- this may need to be removed on future CsWinRT upgrades-->
+  <Target Name="RemoveCsWinRTPackageAnalyzer" BeforeTargets="CoreCompile">
+    <ItemGroup>
+      <Analyzer Remove="@(Analyzer)" Condition="%(Analyzer.NuGetPackageId) == 'Microsoft.Windows.CsWinRT'" />	  
+    </ItemGroup>
+  </Target>
 </Project>