Enable paintFilterBitmap when rendering images with rounded corners

Summary:
Per Android docs (https://developer.android.com/reference/android/graphics/Paint#FILTER_BITMAP_FLAG):

> This should generally be on when drawing bitmaps, unless performance-bound (rendering to software canvas) or preferring pixelation artifacts to blurriness when scaling significantly.

Changelog:
[Android][Fixed] - Improve rendering of images when resampled and corner radius applied

Reviewed By: genkikondo

Differential Revision: D34551184

fbshipit-source-id: 649da53af816be829e5b7f8e2a100f07a8b412b7

Author: javache

ReactAndroid/src/main/java/com/facebook/react/views/image/ReactImageView.java

@@ -138,8 +138,10 @@ public CloseableReference<Bitmap> process(Bitmap source, PlatformBitmapFactory b
 
   // We can't specify rounding in XML, so have to do so here
   private static GenericDraweeHierarchy buildHierarchy(Context context) {
+    RoundingParams roundingParams = RoundingParams.fromCornersRadius(0);
+    roundingParams.setPaintFilterBitmap(true);
     return new GenericDraweeHierarchyBuilder(context.getResources())
-        .setRoundingParams(RoundingParams.fromCornersRadius(0))
+        .setRoundingParams(roundingParams)
         .build();
   }