chore: Enable the new Rubocop rules (#7122)

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

spec/services/message_templates/template/csat_survey_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-describe ::MessageTemplates::Template::CsatSurvey do
+describe MessageTemplates::Template::CsatSurvey do
   context 'when this hook is called' do
     let(:conversation) { create(:conversation) }
 

spec/services/message_templates/template/email_collect_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-describe ::MessageTemplates::Template::EmailCollect do
+describe MessageTemplates::Template::EmailCollect do
   context 'when this hook is called' do
     let(:conversation) { create(:conversation) }
 

spec/services/message_templates/template/greeting_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-describe ::MessageTemplates::Template::Greeting do
+describe MessageTemplates::Template::Greeting do
   context 'when this hook is called' do
     let(:conversation) { create(:conversation) }
 

spec/services/message_templates/template/out_of_office_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-describe ::MessageTemplates::Template::OutOfOffice do
+describe MessageTemplates::Template::OutOfOffice do
   context 'when this hook is called' do
     let(:conversation) { create(:conversation) }