Internationalise Cycle Analytics page

What does this MR do?

It prepares the application to work with i18n. The Cycle Analytics page is the first one in being translated.

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

#28433 (closed)

Screenshots (if relevant)

Cycle Analytics detail page

New setting on user profile page

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #28433 (closed)

app/controllers/profiles_controller.rb

@@ -85,7 +85,8 @@ class ProfilesController < Profiles::ApplicationController
       :twitter,
       :username,
       :website_url,
-      :organization
+      :organization,
+      :preferred_language
     )
   end
 end