Add post type context to "Featured Image" post labels
|Reported by:||SergeyBiryukov||Owned by:||SergeyBiryukov|
Since #19257, CPTs have a "Featured Image" label and a few accompanying strings.
In Russian, that string traditionally includes a post type reference for clarity. I'd like to add a post type context to the related strings to make them more flexible (like "Add New").
(On a related note, it would be great to rename use_featured_image to use_as_featured_image for better consistency, but that ship has sailed.)