Code Quality: Use constructor instead of collection expression for the properties window cache (#15337)

Author: hishitetsu

src/Files.App/Utils/Storage/Helpers/FilePropertiesHelpers.cs

@@ -37,7 +37,7 @@ public static nint GetWindowHandle(Window w)
 			=> WinRT.Interop.WindowNative.GetWindowHandle(w);
 
 		private static TaskCompletionSource? PropertiesWindowsClosingTCS;
-		private static BlockingCollection<WinUIEx.WindowEx> WindowCache = [];
+		private static BlockingCollection<WinUIEx.WindowEx> WindowCache = new();
 
 		/// <summary>
 		/// Open properties window