Fix missing assignment in Node move constructor (facebook#1554)

Summary:
X-link: facebook/react-native#42275


Adds recently added field missing from move constructor

Reviewed By: joevilches

Differential Revision: D52767525

yoga/node/Node.cpp

@@ -31,6 +31,7 @@ Node::Node(Node&& node) {
   hasNewLayout_ = node.hasNewLayout_;
   isReferenceBaseline_ = node.isReferenceBaseline_;
   isDirty_ = node.isDirty_;
+  alwaysFormsContainingBlock_ = node.alwaysFormsContainingBlock_;
   nodeType_ = node.nodeType_;
   context_ = node.context_;
   measureFunc_ = node.measureFunc_;