Add experimental server-side notification grouping (#29889)

config/application.rb

@@ -51,6 +51,8 @@ require_relative '../lib/rails/engine_extensions'
 require_relative '../lib/action_dispatch/remote_ip_extensions'
 require_relative '../lib/active_record/database_tasks_extensions'
 require_relative '../lib/active_record/batches'
+require_relative '../lib/active_record/with_recursive'
+require_relative '../lib/arel/union_parenthesizing'
 require_relative '../lib/simple_navigation/item_extensions'
 
 Bundler.require(:pam_authentication) if ENV['PAM_ENABLED'] == 'true'

config/routes/api.rb

@@ -327,6 +327,18 @@ namespace :api, format: false do
     end
   end
 
+  namespace :v2_alpha do
+    resources :notifications, only: [:index, :show] do
+      collection do
+        post :clear
+      end
+
+      member do
+        post :dismiss
+      end
+    end
+  end
+
   namespace :web do
     resource :settings, only: [:update]
     resources :embeds, only: [:show]