Prefer autoload to require in misc app/ files (#40243)

app/controllers/admin/export_domain_allows_controller.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'csv'
-
 module Admin
   class ExportDomainAllowsController < BaseController
     include Admin::ExportControllerConcern

app/controllers/admin/export_domain_blocks_controller.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'csv'
-
 module Admin
   class ExportDomainBlocksController < BaseController
     include Admin::ExportControllerConcern

app/controllers/settings/imports_controller.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'csv'
-
 class Settings::ImportsController < Settings::BaseController
   before_action :set_bulk_import, only: [:show, :confirm, :destroy]
   before_action :set_recent_imports, only: [:index]

app/lib/activitypub/tag_manager.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'singleton'
-
 class ActivityPub::TagManager
   include Singleton
   include JsonLdHelper

app/lib/entity_cache.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'singleton'
-
 class EntityCache
   include Singleton
 

app/lib/feed_manager.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'singleton'
-
 class FeedManager
   include Singleton
   include Redisable

app/lib/inline_script_manager.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'singleton'
-
 class InlineScriptManager
   include Singleton
   include ActionView::Helpers::TagHelper

app/lib/tag_manager.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'singleton'
-
 class TagManager
   include Singleton
   include RoutingHelper

app/lib/themes.rb

@@ -1,8 +1,5 @@
 # frozen_string_literal: true
 
-require 'singleton'
-require 'yaml'
-
 class Themes
   include Singleton
 

app/models/admin/import.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'csv'
-
 # A non-activerecord helper class for csv upload
 class Admin::Import
   include ActiveModel::Model

app/models/export.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'csv'
-
 class Export
   attr_reader :account
 

app/models/form/import.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require 'csv'
-
 # A non-ActiveRecord helper class for CSV uploads.
 # Handles saving contents to database.
 class Form::Import

spec/lib/request_spec.rb

@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 require 'rails_helper'
-require 'securerandom'
 
 RSpec.describe Request do
   subject { described_class.new(:get, 'http://example.com', **options) }