Add deprecated flag for nativeImageSource

Summary:
Looks like the native Image implementation used to treat old `image!` images slightly differently. This diff restores that behavior for `nativeImageSource`.

{F65080365}

Reviewed By: mmmulani

Differential Revision: D4240506

fbshipit-source-id: d8d39216f86df32e0614d7cdc95df2148c85077a

Libraries/Image/nativeImageSource.js

@@ -47,6 +47,7 @@ function nativeImageSource(spec: SourceSpec): Object {
     uri,
     width: spec.width,
     height: spec.height,
+    deprecated: true,
   };
 }