Try to fix tests

tests/Avalonia.Layout.UnitTests/FullLayoutTests.cs

@@ -113,17 +113,17 @@ namespace Avalonia.Layout.UnitTests
                 Assert.Single(presenters);
 
                 var presenter = presenters[0];
-                Assert.Equal(new Size(190, 190), presenter.Bounds.Size);
+                Assert.Equal(new Size(196, 196), presenter.Bounds.Size);
 
                 var horzScroll = scrollBars.Single(x => x.Orientation == Orientation.Horizontal);
                 var vertScroll = scrollBars.Single(x => x.Orientation == Orientation.Vertical);
 
                 Assert.True(horzScroll.IsVisible);
                 Assert.True(vertScroll.IsVisible);
-                Assert.Equal(new Size(190, 10), horzScroll.Bounds.Size);
-                Assert.Equal(new Size(10, 190), vertScroll.Bounds.Size);
-                Assert.Equal(new Point(0, 190), Position(horzScroll));
-                Assert.Equal(new Point(190, 0), Position(vertScroll));
+                Assert.Equal(new Size(196, 10), horzScroll.Bounds.Size);
+                Assert.Equal(new Size(10, 196), vertScroll.Bounds.Size);
+                Assert.Equal(new Point(0, 196), Position(horzScroll));
+                Assert.Equal(new Point(196, 0), Position(vertScroll));
             }
         }