[ASEnvironment] Fix incomplete gating of upward propagation of layout properties (disabled for now).

AsyncDisplayKit/ASDisplayNode.mm

@@ -2695,7 +2695,7 @@ static const char *ASDisplayNodeDrawingPriorityKey = "ASDrawingPriority";
 
 - (BOOL)supportsUpwardPropagation
 {
-  return YES;
+  return ASEnvironmentStatePropagationEnabled();
 }
 
 ASEnvironmentLayoutOptionsForwarding

AsyncDisplayKit/Layout/ASLayoutSpec.mm

@@ -175,7 +175,7 @@ static NSString * const kDefaultChildrenKey = @"kDefaultChildrenKey";
 // the specifications that are known to have more than one.
 - (BOOL)supportsUpwardPropagation
 {
-  return YES;
+  return ASEnvironmentStatePropagationEnabled();
 }
 
 ASEnvironmentLayoutOptionsForwarding

AsyncDisplayKit/Layout/ASLayoutablePrivate.h

@@ -79,6 +79,9 @@ extern void ASLayoutableClearCurrentContext();
 #define ASEnvironmentLayoutOptionsForwarding \
 - (void)propagateUpLayoutOptionsState\
 {\
+  if (!ASEnvironmentStatePropagationEnabled()) {\
+    return;\
+  }\
   id<ASEnvironment> parent = [self parent];\
   if ([parent supportsUpwardPropagation]) {\
     ASEnvironmentStatePropagateUp(parent, _environmentState.layoutOptionsState);\

AsyncDisplayKit/Private/ASEnvironmentInternal.mm

@@ -19,7 +19,7 @@
 
 BOOL ASEnvironmentStatePropagationEnabled()
 {
-    return AS_SUPPORT_PROPAGATION;
+  return AS_SUPPORT_PROPAGATION;
 }