Support colors in AnimatedInterpolation on Android

Summary:
Color support for AnimatedInterpolation was incomplete with native drivers, as only rgba type strings were supported. There was also an issue where color props instead a StyleAnimatedNode would never get applied. We were also potentially duplicating color parsing support, which is already centralized in `normalizeColor` / `processColor`.

Changelog: [Android][Added] Enable AnimatedInterpolation to interpolate arbitrary color types.

Reviewed By: mdvacca

Differential Revision: D40571873

fbshipit-source-id: 41857ab0391279c5307bc31b855ea8fbcb4cccd8

ReactAndroid/src/main/java/com/facebook/react/animated/ValueAnimatedNode.java

@@ -15,7 +15,6 @@ import com.facebook.react.bridge.ReadableMap;
  * library.
  */
 /*package*/ class ValueAnimatedNode extends AnimatedNode {
-  /*package*/ Object mAnimatedObject = null;
   /*package*/ double mValue = Double.NaN;
   /*package*/ double mOffset = 0;
   private @Nullable AnimatedNodeValueListener mValueListener;
@@ -37,7 +36,7 @@ import com.facebook.react.bridge.ReadableMap;
   }
 
   public Object getAnimatedObject() {
-    return mAnimatedObject;
+    return null;
   }
 
   public void flattenOffset() {