Change algorithm of follow recommendations (#28314)

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

db/migrate/20231211234923_create_follow_recommendation_mutes.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class CreateFollowRecommendationMutes < ActiveRecord::Migration[7.1]
+  def change
+    create_table :follow_recommendation_mutes do |t|
+      t.references :account, null: false, foreign_key: { on_delete: :cascade }, index: false
+      t.references :target_account, null: false, foreign_key: { to_table: 'accounts', on_delete: :cascade }
+
+      t.timestamps
+    end
+
+    add_index :follow_recommendation_mutes, [:account_id, :target_account_id], unique: true
+  end
+end

db/migrate/20231212073317_add_languages_index_to_account_summaries.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddLanguagesIndexToAccountSummaries < ActiveRecord::Migration[7.1]
+  disable_ddl_transaction!
+
+  def change
+    add_index :account_summaries, [:account_id, :language, :sensitive], algorithm: :concurrently
+  end
+end