Enable "zero monkey patching" mode in RSpec (#31614)

spec/lib/importer/accounts_index_importer_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe Importer::AccountsIndexImporter do
+RSpec.describe Importer::AccountsIndexImporter do
   describe 'import!' do
     let(:pool) { Concurrent::FixedThreadPool.new(5) }
     let(:importer) { described_class.new(batch_size: 123, executor: pool) }

spec/lib/importer/base_importer_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe Importer::BaseImporter do
+RSpec.describe Importer::BaseImporter do
   describe 'import!' do
     let(:pool) { Concurrent::FixedThreadPool.new(5) }
     let(:importer) { described_class.new(batch_size: 123, executor: pool) }

spec/lib/importer/public_statuses_index_importer_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe Importer::PublicStatusesIndexImporter do
+RSpec.describe Importer::PublicStatusesIndexImporter do
   describe 'import!' do
     let(:pool) { Concurrent::FixedThreadPool.new(5) }
     let(:importer) { described_class.new(batch_size: 123, executor: pool) }

spec/lib/importer/statuses_index_importer_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe Importer::StatusesIndexImporter do
+RSpec.describe Importer::StatusesIndexImporter do
   describe 'import!' do
     let(:pool) { Concurrent::FixedThreadPool.new(5) }
     let(:importer) { described_class.new(batch_size: 123, executor: pool) }

spec/lib/importer/tags_index_importer_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe Importer::TagsIndexImporter do
+RSpec.describe Importer::TagsIndexImporter do
   describe 'import!' do
     let(:pool) { Concurrent::FixedThreadPool.new(5) }
     let(:importer) { described_class.new(batch_size: 123, executor: pool) }