Autofix Rubocop Style/NestedParenthesizedCalls (#23646)

.rubocop_todo.yml

@@ -3450,14 +3450,6 @@ Style/MutableConstant:
     - 'lib/mastodon/snowflake.rb'
     - 'spec/controllers/api/base_controller_spec.rb'
 
-# Offense count: 1
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: AllowedMethods.
-# AllowedMethods: be, be_a, be_an, be_between, be_falsey, be_kind_of, be_instance_of, be_truthy, be_within, eq, eql, end_with, include, match, raise_error, respond_to, start_with
-Style/NestedParenthesizedCalls:
-  Exclude:
-    - 'spec/services/post_status_service_spec.rb'
-
 # Offense count: 7
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: MinDigits, Strict, AllowedNumbers, AllowedPatterns.

spec/services/post_status_service_spec.rb

@@ -148,7 +148,7 @@ RSpec.describe PostStatusService, type: :service do
 
     expect do
       subject.call(account, text: '@alice hm, @bob is really annoying lately', allowed_mentions: [mentioned_account.id])
-    end.to raise_error(an_instance_of(PostStatusService::UnexpectedMentionsError).and having_attributes(accounts: [unexpected_mentioned_account]))
+    end.to raise_error(an_instance_of(PostStatusService::UnexpectedMentionsError).and class="p">(having_attributes(accounts: [unexpected_mentioned_account])))
   end
 
   it 'processes duplicate mentions correctly' do