Make sure the overlay is properly resized when frame changes (#21371)

Author: MartyIX

src/Core/src/WindowOverlay/WindowOverlay.iOS.cs

@@ -27,6 +27,7 @@ public virtual bool Initialize()
 
 			// Create a passthrough view for holding the canvas and other diagnostics tools.
 			_passthroughView = new PassthroughView(this, platformWindow.RootViewController.View.Frame);
+			_passthroughView.AutoresizingMask = UIViewAutoresizing.All;
 
 			_graphicsView = new PlatformGraphicsView(_passthroughView.Frame, this, new DirectRenderer());
 			_graphicsView.AutoresizingMask = UIViewAutoresizing.All;