[NUI] Fix FlexLayout size calculation issue caused by typo

Fix typo in FlexLayout size calculation logic.

This typo was caused by https://github.com/Samsung/TizenFX/pull/4032

diff --git a/src/Tizen.NUI/src/public/Layouting/FlexLayout.cs b/src/Tizen.NUI/src/public/Layouting/FlexLayout.cs
index 1096e1f..8564db6 100755 (executable)
--- a/src/Tizen.NUI/src/public/Layouting/FlexLayout.cs
+++ b/src/Tizen.NUI/src/public/Layouting/FlexLayout.cs
@@ -672,8 +672,8 @@ namespace Tizen.NUI
 
             childLayout?.Measure(childWidthMeasureSpec, childHeightMeasureSpec);
 
-            measureSize.width = (childLayout == null) ? 0 : MeasuredWidth.Size.AsRoundedValue();
-            measureSize.height = (childLayout == null) ? 0 : MeasuredHeight.Size.AsRoundedValue();
+            measureSize.width = (childLayout == null) ? 0 : childLayout.MeasuredWidth.Size.AsRoundedValue();
+            measureSize.height = (childLayout == null) ? 0 : childLayout.MeasuredHeight.Size.AsRoundedValue();
         }
 
         void InsertChild(LayoutItem child)