Minimization bugfix on Windows

src/Windows/Avalonia.Win32/WindowImpl.cs

@@ -265,7 +265,7 @@ namespace Avalonia.Win32
             {
                 if (IsWindowVisible(_hwnd))
                 {
-                    ShowWindow(value, true);
+                    ShowWindow(value, value != WindowState.Minimized); // If the window is minimized, it shouldn't be activated
                 }
 
                 _showWindowState = value;                
@@ -973,7 +973,7 @@ namespace Avalonia.Win32
             {
                 case WindowState.Minimized:
                     newWindowProperties.IsFullScreen = false;
-                    command = activate ? ShowWindowCommand.Minimize : ShowWindowCommand.ShowMinNoActive;
+                    command = ShowWindowCommand.Minimize;
                     break;
                 case WindowState.Maximized:
                     newWindowProperties.IsFullScreen = false;