Fix for Image displayName, currently displaying as <Component> in tests (#23287)

Summary:
As per #21937, Image `displayName` is not set. This means it comes through as `<Component>` in tests.

[General][fixed] - fix `displayName` for `Image`
Pull Request resolved: #23287

Differential Revision: D13941744

Pulled By: cpojer

fbshipit-source-id: eab161eee415ec4f7207efcd5c6e2a4bbe67dfe1

Author: linnett

Libraries/Image/Image.android.js

@@ -259,6 +259,7 @@ let Image = (
 };
 
 Image = React.forwardRef(Image);
+Image.displayName = 'Image';
 
 /**
  * Retrieve the width and height (in pixels) of an image prior to displaying it

Libraries/Image/Image.ios.js

@@ -124,6 +124,7 @@ let Image = (
 };
 
 Image = React.forwardRef(Image);
+Image.displayName = 'Image';
 
 /**
  * Retrieve the width and height (in pixels) of an image prior to displaying it.