Simplify NavigationRootManager.Connect on the Windows platform. (#2…

…3345)

* Simplify `NavigationRootManager.Connect` on the Windows platform.

* Use ternary operator syntax

* Removed extra tabs

* Moved `_disconnected = false;` to `if (_disconnected)`

src/Core/src/Platform/Windows/NavigationRootManager.cs

@@ -89,33 +89,17 @@ public virtual void Connect(UIElement platformView)
 				_rootView.Content = null;
 			}
 
-			NavigationView rootNavigationView;
-			if (platformView is NavigationView nv)
+			_rootView.Content = platformView is NavigationView ? platformView : new RootNavigationView()
 			{
-				rootNavigationView = nv;
-				_rootView.Content = platformView;
-			}
-			else
-			{
-				if (_rootView.Content is RootNavigationView navView)
-				{
-					rootNavigationView = navView;
-				}
-				else
-				{
-					rootNavigationView = new RootNavigationView();
-				}
-
-				rootNavigationView.Content = platformView;
-				_rootView.Content = rootNavigationView;
-			}
+				Content = platformView
+			};
 
 			if (_disconnected)
 			{
 				_platformWindow.Activated += OnWindowActivated;
+				_disconnected = false;
 			}
 
-			_disconnected = false;
 			_rootView.OnWindowTitleBarContentSizeChanged += WindowRootViewOnWindowTitleBarContentSizeChanged;
 		}