Merge pull request AvaloniaUI#8574 from AvaloniaUI/fixes/win32-consis…

…tent-minimize-restore-window-size

Win32: Retain window position and size when docked and then minimized and restored.
# Conflicts:
#	tests/Avalonia.IntegrationTests.Appium/WindowTests.cs

src/Windows/Avalonia.Win32/WindowImpl.cs

@@ -263,11 +263,12 @@ public WindowState WindowState
 
             set
             {
-                if (IsWindowVisible(_hwnd))
+                if (IsWindowVisible(_hwnd) && _lastWindowState != value)
                 {
                     ShowWindow(value, value != WindowState.Minimized); // If the window is minimized, it shouldn't be activated
                 }
 
+                _lastWindowState = value;
                 _showWindowState = value;
             }
         }