Bump ModernWpfUI from 0.9.3 to 0.9.4

Bumps [ModernWpfUI](https://github.com/Kinnara/ModernWpf) from 0.9.3 to 0.9.4.
- [Release notes](https://github.com/Kinnara/ModernWpf/releases)
- [Commits](https://github.com/Kinnara/ModernWpf/compare/v0.9.3...v0.9.4)

Signed-off-by: dependabot[bot] <[email protected]>

NatTypeTester/NatTypeTester.csproj

@@ -24,7 +24,7 @@
       <PrivateAssets>All</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="5.0.1" />
-    <PackageReference Include="ModernWpfUI" Version="0.9.3" />
+    <PackageReference Include="ModernWpfUI" Version="0.9.4" />
     <PackageReference Include="ReactiveUI.Events.WPF" Version="13.2.2" />
     <PackageReference Include="ReactiveUI.WPF" Version="13.2.2" />
     <PackageReference Include="Splat.Microsoft.Extensions.DependencyInjection" Version="10.0.1" />