Fix AcrylicBrush AV

Author: FrayxRulez

Telegram/Common/ApiInfo.cs

@@ -45,6 +45,9 @@ public static class ApiInfo
         private static bool? _canCreateRectangleClip;
         public static bool CanCreateRectangleClip => _canCreateRectangleClip ??= ApiInformation.IsMethodPresent("Windows.UI.Composition.Compositor", "CreateRectangleClip");
 
+        private static bool? _canSetTintLuminosityOpacity;
+        public static bool CanSetTintLuminosityOpacity => _canSetTintLuminosityOpacity ??= ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 10);
+
         // We only enable shadows on Windows 11 for three reasons:
         // First: they look terrible on Windows 10
         // Second: they are way more optimized on Windows 11 (they use a nine-grid instead of dynamically casted shadows)

Telegram/Common/Theme.cs

@@ -409,7 +409,14 @@ Color GetShade(AccentShade shade)
                         {
                             update.TintColor = tintColor;
                             update.TintOpacity = tintOpacity;
-                            update.TintLuminosityOpacity = tintLuminosityOpacity;
+                            if (ApiInfo.CanSetTintLuminosityOpacity)
+                            {
+                                update.TintLuminosityOpacity = tintLuminosityOpacity;
+                            }
+                            else
+                            {
+                                update.SetValue(AcrylicBrush.TintLuminosityOpacityProperty, tintLuminosityOpacity);
+                            }
                             update.FallbackColor = fallbackColor;
                             update.AlwaysUseFallback = !PowerSavingPolicy.AreMaterialsEnabled;
                         });