chore: Move embedding generation to sidekiq (#9238)

chore: Move embedding generation to a job

enterprise/app/jobs/portal/article_indexing_job.rb

@@ -0,0 +1,7 @@
+class Portal::ArticleIndexingJob < ApplicationJob
+  queue_as :low
+
+  def perform(article)
+    article.generate_and_save_article_seach_terms
+  end
+end

enterprise/app/models/enterprise/concerns/article.rb

@@ -39,6 +39,10 @@ module Enterprise::Concerns::Article
   def add_article_embedding
     return unless account.feature_enabled?('help_center_embedding_search')
 
+    Portal::ArticleIndexingJob.perform_later(self)
+  end
+
+  def generate_and_save_article_seach_terms
     terms = generate_article_search_terms
     article_embeddings.destroy_all
     terms.each { |term| article_embeddings.create!(term: term) }