Fix being able to spoof link verification (#20217)

- Change verification to happen in `default` queue
- Change verification worker to only be queued if there's something to do
- Add `link` tags from metadata fields to page header of profiles

app/services/activitypub/process_account_service.rb

@@ -40,7 +40,7 @@ class ActivityPub::ProcessAccountService < BaseService
     unless @options[:only_key] || @account.suspended?
       check_featured_collection! if @account.featured_collection_url.present?
       check_featured_tags_collection! if @json['featuredTags'].present?
-      check_links! unless @account.fields.empty?
+      check_links! if @account.fields.any?(&:requires_verification?)
     end
 
     @account

app/services/update_account_service.rb

@@ -28,7 +28,7 @@ class UpdateAccountService < BaseService
   end
 
   def check_links(account)
-    VerifyAccountLinksWorker.perform_async(account.id)
+    VerifyAccountLinksWorker.perform_async(account.id) if account.fields.any?(&:requires_verification?)
   end
 
   def process_hashtags(account)