ci: fix up incorrect $(OS) identifier as we use Linux GH actions runners to build all versions now and these wouldn't work for Windows. Remove need for vcruntime too since we no longer use winui3

Author: benaclejames

VRCFaceTracking.Core/VRCFaceTracking.Core.csproj

@@ -14,12 +14,7 @@
   <ItemGroup>
     <ProjectReference Include="..\VRCFaceTracking.SDK\VRCFaceTracking.SDK.csproj" />
   </ItemGroup>
-  <ItemGroup Condition="'$(OS)' == 'Windows_NT'">
-    <Content Include="C:\Windows\System32\vcruntime140.dll" Link="vcruntime140.dll">
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-    </Content>
-  </ItemGroup>
-  <ItemGroup Condition="'$(OS)' == 'Windows_NT'">
+  <ItemGroup Condition="'$(RuntimeIdentifier)' == 'win-x64' Or '$(RuntimeIdentifier)' == 'win-arm64' Or ('$(RuntimeIdentifier)' == '' And $([MSBuild]::IsOSPlatform('Windows')))">
     <Content Include="..\fti_osc.dll" Link="fti_osc.dll">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Content>