Fabric: YogaStylableProps now inherits Props

Summary:
How we can finally make `ViewProps` inherit `YogaStylableProps` and remove `dynamic_cast`. This overall change is aligned with D19963353.

Changelog: [Internal] Fabric-specific internal change.

Reviewed By: sammy-SC

Differential Revision: D20052026

fbshipit-source-id: 1066f9a259b50d4672111c9c03a71c2590d59aca

ReactCommon/fabric/components/view/ViewProps.cpp

@@ -19,8 +19,7 @@ namespace facebook {
 namespace react {
 
 ViewProps::ViewProps(ViewProps const &sourceProps, RawProps const &rawProps)
-    : Props(sourceProps, rawProps),
-      YogaStylableProps(sourceProps, rawProps),
+    : YogaStylableProps(sourceProps, rawProps),
       AccessibilityProps(sourceProps, rawProps),
       opacity(
           convertRawProp(rawProps, "opacity", sourceProps.opacity, (Float)1.0)),

ReactCommon/fabric/components/view/ViewProps.h

@@ -23,9 +23,7 @@ class ViewProps;
 
 using SharedViewProps = std::shared_ptr<ViewProps const>;
 
-class ViewProps : public Props,
-                  public YogaStylableProps,
-                  public AccessibilityProps {
+class ViewProps : public YogaStylableProps, public AccessibilityProps {
  public:
   ViewProps() = default;
   ViewProps(ViewProps const &sourceProps, RawProps const &rawProps);

ReactCommon/fabric/components/view/yoga/YogaLayoutableShadowNode.cpp

@@ -36,7 +36,7 @@ YogaLayoutableShadowNode::YogaLayoutableShadowNode(
       yogaNode_(&initializeYogaConfig(yogaConfig_)) {
   yogaNode_.setContext(this);
 
-  setProps(dynamic_cast<YogaStylableProps const &>(*fragment.props));
+  setProps(static_cast<YogaStylableProps const &>(*fragment.props));
   setChildren(YogaLayoutableShadowNode::getYogaLayoutableChildren());
 }
 

ReactCommon/fabric/components/view/yoga/YogaStylableProps.cpp

@@ -22,7 +22,8 @@ namespace react {
 YogaStylableProps::YogaStylableProps(
     YogaStylableProps const &sourceProps,
     RawProps const &rawProps)
-    : yogaStyle(convertRawProp(rawProps, sourceProps.yogaStyle)){};
+    : Props(sourceProps, rawProps),
+      yogaStyle(convertRawProp(rawProps, sourceProps.yogaStyle)){};
 
 #pragma mark - DebugStringConvertible
 

ReactCommon/fabric/components/view/yoga/YogaStylableProps.h

@@ -15,7 +15,7 @@
 namespace facebook {
 namespace react {
 
-class YogaStylableProps {
+class YogaStylableProps : public Props {
  public:
   YogaStylableProps() = default;
   YogaStylableProps(