Fix obsolete digitalocean.rake file breaking rake tasks (#15618)

config/application.rb

@@ -25,6 +25,7 @@ require_relative '../lib/devise/two_factor_pam_authenticatable'
 require_relative '../lib/chewy/strategy/custom_sidekiq'
 require_relative '../lib/webpacker/manifest_extensions'
 require_relative '../lib/webpacker/helper_extensions'
+require_relative '../lib/rails/engine_extensions'
 
 Dotenv::Railtie.load
 

lib/rails/engine_extensions.rb

+module Rails
+  module EngineExtensions
+    # Rewrite task loading code to filter digitalocean.rake task
+    def run_tasks_blocks(app)
+      Railtie.instance_method(:run_tasks_blocks).bind(self).call(app)
+      paths["lib/tasks"].existent.reject { |ext| ext.end_with?('digitalocean.rake') }.sort.each { |ext| load(ext) }
+    end
+  end
+end
+
+Rails::Engine.prepend(Rails::EngineExtensions)