[Refactor]Use same improved BringToForeground across the solution (#28532)

* Use single BringToForeground across the solution

* Close flyout manually

* Try with sending input, if it fails try threads

src/modules/peek/Peek.UI/PeekXAML/MainWindow.xaml.cs

@@ -184,7 +184,7 @@ namespace Peek.UI
             }
 
             this.Show();
-            this.BringToForeground();
+            WindowHelpers.BringToForeground(this.GetWindowHandle());
         }
 
         private Size GetMonitorMaxContentSize(Size monitorSize, double scaling)