Added TODO comment to revisit shouldSetTextContent()

Author: Brian Vaughn

src/renderers/native/ReactNativeFiber.js

@@ -304,6 +304,12 @@ const NativeRenderer = ReactFiberReconciler({
   scheduleDeferredCallback: global.requestIdleCallback,
 
   shouldSetTextContent(props : Props) : boolean {
+    // TODO (bvaughn) Revisit this decision.
+    // Always returning false simplifies the createInstance() implementation,
+    // But creates an additional child Fiber for raw text children.
+    // No additional native views are created though.
+    // It's not clear to me which is better so I'm deferring for now.
+    // More context @ github.com/facebook/react/pull/8560#discussion_r92111303 
     return false;
   },