Fabric: Backward-compatible behaviour of `measureInWindow` and `measure`

Summary:
Before this change, in case of incorrect measurements, Fabric's implementation of `measure` and `measureInWindow` incorrectly returned negative height and width. Now it returns zeros (as classic React Native does).

Fabric:
This does not fix `measureLayout` called for virtual nodes. This is not so trivially to fix and it will be done separately.

Changelog: [Internal] Fabric-specific internal change.

Reviewed By: JoshuaGross, yungsters, mdvacca

Differential Revision: D21433239

fbshipit-source-id: fbaf5ee35c690506822c634daac4426542c2cdcf

ReactCommon/fabric/uimanager/UIManagerBinding.cpp

@@ -535,10 +535,15 @@ jsi::Value UIManagerBinding::get(
               *shadowNodeFromValue(runtime, arguments[0]),
               nullptr,
               {/* .includeTransform = */ true});
-          auto frame = layoutMetrics.frame;
           auto onSuccessFunction =
               arguments[1].getObject(runtime).getFunction(runtime);
 
+          if (layoutMetrics == EmptyLayoutMetrics) {
+            onSuccessFunction.call(runtime, {0, 0, 0, 0, 0, 0});
+            return jsi::Value::undefined();
+          }
+
+          auto frame = layoutMetrics.frame;
           onSuccessFunction.call(
               runtime,
               {0,
@@ -568,8 +573,13 @@ jsi::Value UIManagerBinding::get(
 
           auto onSuccessFunction =
               arguments[1].getObject(runtime).getFunction(runtime);
-          auto frame = layoutMetrics.frame;
 
+          if (layoutMetrics == EmptyLayoutMetrics) {
+            onSuccessFunction.call(runtime, {0, 0, 0, 0});
+            return jsi::Value::undefined();
+          }
+
+          auto frame = layoutMetrics.frame;
           onSuccessFunction.call(
               runtime,
               {jsi::Value{runtime, (double)frame.origin.x},