Eagerly load statuses with the main query in Api::V1::BookmarksController (#14674)

This is same with commit 976938bf30 except
that it was for Api::V1::FavouritesController while this is for
Api::V1::BookmarksController.

app/controllers/api/v1/bookmarks_controller.rb

@@ -17,14 +17,11 @@ class Api::V1::BookmarksController < Api::BaseController
   end
 
   def cached_bookmarks
-    cache_collection(
-      Status.reorder(nil).joins(:bookmarks).merge(results),
-      Status
-    )
+    cache_collection(results.map(&:status), Status)
   end
 
   def results
-    @_results ||= account_bookmarks.paginate_by_id(
+    @_results ||= account_bookmarks.eager_load(:status).paginate_by_id(
       limit_param(DEFAULT_STATUSES_LIMIT),
       params_slice(:max_id, :since_id, :min_id)
     )