Fix: Fixed mica in properties window (#10659)

Author: yaira2

src/Files.App/Helpers/FilePropertiesHelpers.cs

@@ -72,7 +72,7 @@ public static async Task OpenPropertiesWindowAsync(object item, IShellPage assoc
 					MinWidth = 460,
 					MinHeight = 550,
 					Content = frame,
-					Backdrop = new WinUIEx.MicaSystemBackdrop{ DarkTintOpacity = 0.8 },
+					Backdrop = new WinUIEx.MicaSystemBackdrop(),
 				};
 
 				var appWindow = propertiesWindow.AppWindow;

src/Files.App/Views/Pages/PropertiesSecurity.xaml.cs

@@ -108,7 +108,7 @@ private void OpenAdvancedProperties()
 					propertiesWindow.MinHeight = 550;
 
 					// Set backdrop
-					propertiesWindow.Backdrop = new WinUIEx.MicaSystemBackdrop() { DarkTintOpacity = 0.8 };
+					propertiesWindow.Backdrop = new WinUIEx.MicaSystemBackdrop();
 
 					appWindow.TitleBar.ExtendsContentIntoTitleBar = true;