Update poll question answers translatable fields

We needed to bring back support for CKEditor in our translatable form,
which we had temporarily remove.

And now we support CKEditor in our translatable specs, and so we can
remove the duplicated specs for poll question answers.

spec/shared/features/translatable.rb

@@ -240,11 +240,11 @@ def text_for(field, locale)
   end
 end
 
-def field_for(field, locale)
+def field_for(field, locale, visible: true)
   if translatable_class.name == "I18nContent"
     "contents_content_#{translatable.key}values_#{field}_#{locale}"
   else
-    find("[data-locale='#{locale}'][id$='#{field}']")[:id]
+    find("[data-locale='#{locale}'][id$='#{field}']", visible: visible)[:id]
   end
 end
 
@@ -261,6 +261,8 @@ def fill_in_textarea(field, textarea_type, locale, with:)
     click_link class: "fullscreen-toggle"
     fill_in field_for(field, locale), with: with
     click_link class: "fullscreen-toggle"
+  elsif textarea_type == :ckeditor
+    fill_in_ckeditor field_for(field, locale, visible: false), with: with
   end
 end
 
@@ -274,6 +276,10 @@ def expect_page_to_have_translatable_field(field, locale, with:)
       click_link class: "fullscreen-toggle"
       expect(page).to have_field field_for(field, locale), with: with
       click_link class: "fullscreen-toggle"
+    elsif textarea_type == :ckeditor
+      within(".ckeditor div.js-globalize-attribute[data-locale='#{locale}']") do
+        within_frame(0) { expect(page).to have_content with }
+      end
     end
   end
 end
@@ -288,7 +294,7 @@ def update_button_text
     "Update notification"
   when "Poll"
     "Update poll"
-  when "Poll::Question"
+  when "Poll::Question", "Poll::Question::Answer"
     "Save"
   when "Widget::Card"
     "Save card"