Fix some rubocop style issues (#5730)

app/controllers/application_controller.rb

@@ -104,7 +104,7 @@ class ApplicationController < ActionController::Base
     unless uncached_ids.empty?
       uncached = klass.where(id: uncached_ids).with_includes.map { |item| [item.id, item] }.to_h
 
-      uncached.values.each do |item|
+      uncached.each_value do |item|
         Rails.cache.write(item.cache_key, item)
       end
     end

app/controllers/auth/sessions_controller.rb

@@ -62,7 +62,7 @@ class Auth::SessionsController < Devise::SessionsController
 
     if user_params[:otp_attempt].present? && session[:otp_user_id]
       authenticate_with_two_factor_via_otp(user)
-    elsif user && user.valid_password?(user_params[:password])
+    elsif user&.valid_password?(user_params[:password])
       prompt_for_two_factor(user)
     end
   end

app/helpers/admin/filter_helper.rb

@@ -18,7 +18,7 @@ module Admin::FilterHelper
 
   def selected?(more_params)
     new_url = filtered_url_for(more_params)
-    filter_link_class(new_url) == 'selected' ? true : false
+    filter_link_class(new_url) == 'selected'
   end
 
   private

app/lib/extractor.rb

@@ -5,7 +5,8 @@ module Extractor
 
   module_function
 
-  def extract_mentions_or_lists_with_indices(text) # :yields: username, list_slug, start, end
+  # :yields: username, list_slug, start, end
+  def extract_mentions_or_lists_with_indices(text)
     return [] unless text =~ Twitter::Regex[:at_signs]
 
     possible_entries = []

app/models/web/push_subscription.rb

@@ -24,12 +24,12 @@ class Web::PushSubscription < ApplicationRecord
   end
 
   def pushable?(notification)
-    data && data.key?('alerts') && data['alerts'][notification.type.to_s]
+    data&.key?('alerts') && data['alerts'][notification.type.to_s]
   end
 
   def as_payload
     payload = { id: id, endpoint: endpoint }
-    payload[:alerts] = data['alerts'] if data && data.key?('alerts')
+    payload[:alerts] = data['alerts'] if data&.key?('alerts')
     payload
   end
 

app/services/batched_remove_status_service.rb

@@ -26,7 +26,7 @@ class BatchedRemoveStatusService < BaseService
     statuses.each(&:destroy)
 
     # Batch by source account
-    statuses.group_by(&:account_id).each do |_, account_statuses|
+    statuses.group_by(&:account_id).each_value do |account_statuses|
       account = account_statuses.first.account
 
       unpush_from_home_timelines(account, account_statuses)

app/services/resolve_remote_account_service.rb

@@ -124,11 +124,11 @@ class ResolveRemoteAccountService < BaseService
   end
 
   def auto_suspend?
-    domain_block && domain_block.suspend?
+    domain_block&.suspend?
   end
 
   def auto_silence?
-    domain_block && domain_block.silence?
+    domain_block&.silence?
   end
 
   def domain_block