Breaking: Fix callback const-correctness (#1369)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1369

X-link: https://github.com/facebook/react-native/pull/39370

This fixes const-correctness of callbacks (e.g. not letting a logger function modify nodes during layout). This helps us to continue to fix const-correctness issues inside of Yoga.

This change is breaking to the public API, since it requires a change in signature passed to Yoga.

Changelog: [Internal]

Reviewed By: rshest

Differential Revision: D49130714

fbshipit-source-id: 4305f8882d89f296e45b78497a51716a0dbb3b2d

javascript/src/Node.cpp

@@ -15,7 +15,7 @@
 #include "./Config.h"
 
 static YGSize globalMeasureFunc(
-    YGNodeRef nodeRef,
+    YGNodeConstRef nodeRef,
     float width,
     YGMeasureMode widthMode,
     float height,
@@ -29,7 +29,7 @@ static YGSize globalMeasureFunc(
   return ygSize;
 }
 
-static void globalDirtiedFunc(YGNodeRef nodeRef) {
+static void globalDirtiedFunc(YGNodeConstRef nodeRef) {
   Node const& node = *reinterpret_cast<Node const*>(YGNodeGetContext(nodeRef));
 
   node.callDirtiedFunc();