chore: Use OpenSans default font

src/Uno.Playground.Shared/App.xaml.cs

@@ -38,6 +38,8 @@ namespace Uno.UI.Demo
 		{
 			InitializeLogging();
 
+			global::Uno.UI.FeatureConfiguration.Font.DefaultTextFontFamily = "ms-appx:///Uno.Fonts.OpenSans/Fonts/OpenSans.ttf";
+
 			this.InitializeComponent();
 			this.Suspending += OnSuspending;
 		}

src/Uno.Playground.WASM/Uno.Playground.WASM.csproj

@@ -114,6 +114,8 @@
 		<PackageReference Include="Uno.Wasm.Bootstrap.DevServer" Version="8.0.8" />
 		<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="6.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Logging.Filter" Version="1.1.2" />
+		
+		<PackageReference Include="Uno.Fonts.OpenSans" Version="2.4.0" />
 	</ItemGroup>
 
 	<ItemGroup>