Add superapp index on oauth_applications (#25670)

db/migrate/20230702131023_add_superapp_index_to_applications.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddSuperappIndexToApplications < ActiveRecord::Migration[6.1]
+  disable_ddl_transaction!
+
+  def change
+    add_index :oauth_applications, :superapp, where: 'superapp = true', algorithm: :concurrently
+  end
+end