fix: Update pagination logic in the help center (#5693)

app/views/api/v1/accounts/articles/index.json.jbuilder

@@ -5,7 +5,6 @@ end
 json.meta do
   json.current_page @current_page
   json.articles_count @articles_count
-  json.all_articles_count @articles_count
   json.archived_articles_count @articles.archived.size
   json.published_count @articles.published.size
   json.draft_articles_count @articles.draft.size

app/views/api/v1/accounts/portals/_portal.json.jbuilder

@@ -7,6 +7,7 @@ json.name portal.name
 json.page_title portal.page_title
 json.slug portal.slug
 json.archived portal.archived
+json.account_id portal.account_id
 
 json.config do
   json.allowed_locales do