YGLayout - restore support for moving views between superviews

Author: kenny-pu

Sources/YogaKit/YGLayout.mm

@@ -489,7 +489,12 @@ static void YGAttachNodesFromViewHierachy(UIView* const view) {
     if (!YGNodeHasExactSameChildren(node, subviewsToInclude)) {
       YGRemoveAllChildren(node);
       for (int i = 0; i < subviewsToInclude.count; i++) {
-        YGNodeInsertChild(node, subviewsToInclude[i].yoga.node, i);
+        YGNodeRef child = subviewsToInclude[i].yoga.node;
+        YGNodeRef parent = YGNodeGetParent(child);
+        if (parent != NULL) {
+          YGNodeRemoveChild(parent, child);
+        }
+        YGNodeInsertChild(node, child, i);
       }
     }