Fix JS animated node value updating when listener is attached

Summary:
The JS-side animated node values were not being updated on AnimatedValue (and thus AnimatedValueXY); however, the native event "onAnimatedValueUpdate" is being handled properly in AnimatedNode. It turns out that single underscore prefixed methods are obfuscated at FB. And thus AnimatedValue._onAnimatedValueUpdateReceived was not getting called. Changing the method name to double underscore as a way to denote "protected" fixes the issue.

Changelog:
[General][Fixed] - JS animated node value updates properly when listener is attached

Reviewed By: yungsters

Differential Revision: D33962038

fbshipit-source-id: c4f60e1f1ccc0cef3e65b89034bdb91376a26416

Libraries/Animated/nodes/AnimatedNode.js

@@ -130,12 +130,12 @@ class AnimatedNode {
           if (data.tag !== this.__getNativeTag()) {
             return;
           }
-          this._onAnimatedValueUpdateReceived(data.value);
+          this.__onAnimatedValueUpdateReceived(data.value);
         },
       );
   }
 
-  _onAnimatedValueUpdateReceived(value: number) {
+  __onAnimatedValueUpdateReceived(value: number) {
     this.__callListeners(value);
   }
 

Libraries/Animated/nodes/AnimatedValue.js

@@ -211,7 +211,7 @@ class AnimatedValue extends AnimatedWithChildren {
     }
   }
 
-  _onAnimatedValueUpdateReceived(value: number): void {
+  __onAnimatedValueUpdateReceived(value: number): void {
     this._updateValue(value, false /*flush*/);
   }