Add filled `bookmarks-bookmarked` icon
This facilitates the use case of alternating between the filled and hollow styles--same as for the `rating` and `rating-unrated` icons. BUG: 473694 FIXED-IN: 5.110
This facilitates the use case of alternating between the filled and hollow styles--same as for the `rating` and `rating-unrated` icons. BUG: 473694 FIXED-IN: 5.110
mentioned in commit a036c474