chore: Enable the new Rubocop rules (#7122)

fixes: https://linear.app/chatwoot/issue/CW-1574/renable-the-disabled-rubocop-rules

db/migrate/20230202132107_install_audited.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class InstallAudited < ActiveRecord::Migration[6.1]
-  # rubocop:disable RMetrics/MethodLength
+  # rubocop:disable Metrics/MethodLength
   def self.up
     create_table :audits, :force => true do |t|
       t.bigint :auditable_id
@@ -19,7 +19,7 @@ class InstallAudited < ActiveRecord::Migration[6.1]
       t.string :request_uuid
       t.datetime :created_at
     end
-    # rubocop:enable RMetrics/MethodLength
+    # rubocop:enable Metrics/MethodLength
 
     add_index :audits, [:auditable_type, :auditable_id, :version], :name => 'auditable_index'
     add_index :audits, [:associated_type, :associated_id], :name => 'associated_index'

db/seeds.rb

@@ -5,7 +5,7 @@ ConfigLoader.new.process
 ## Seeds productions
 if Rails.env.production?
   # Setup Onboarding flow
-  ::Redis::Alfred.set(::Redis::Alfred::CHATWOOT_INSTALLATION_ONBOARDING, true)
+  Redis::Alfred.set(Redis::Alfred::CHATWOOT_INSTALLATION_ONBOARDING, true)
 end
 
 ## Seeds for Local Development
@@ -46,7 +46,7 @@ unless Rails.env.production?
   inbox = Inbox.create!(channel: web_widget, account: account, name: 'Acme Support')
   InboxMember.create!(user: user, inbox: inbox)
 
-  contact_inbox = ::ContactInboxWithContactBuilder.new(
+  contact_inbox = ContactInboxWithContactBuilder.new(
     source_id: user.id,
     inbox: inbox,
     hmac_verified: true,