Pass layout context for Event::LayoutPassStart

Summary: Adds the layout context pointer when publishing `Event::LayoutPassStart`.

Reviewed By: SidharthGuglani

Differential Revision: D15754425

fbshipit-source-id: 6295ae1ebec9eab72a79c43bc1cb0e05a6d7ae68

yoga/Yoga.cpp

@@ -4013,7 +4013,7 @@ void YGNodeCalculateLayoutWithContext(
     void* layoutContext) {
 
 #ifdef YG_ENABLE_EVENTS
-  Event::publish<Event::LayoutPassStart>(node);
+  Event::publish<Event::LayoutPassStart>(node, {layoutContext});
 #endif
   // unique pointer to allow ending the marker early
   std::unique_ptr<marker::MarkerSection<YGMarkerLayout>> marker{

yoga/event/event.h

@@ -72,6 +72,11 @@ struct Event::TypedData<Event::NodeDeallocation> {
   YGConfig* config;
 };
 
+template <>
+struct Event::TypedData<Event::LayoutPassStart> {
+  void* layoutContext;
+};
+
 template <>
 struct Event::TypedData<Event::LayoutPassEnd> {
   void* layoutContext;