chore: Apply fixes for items in rubocop_todo [CW-1806] (#8864)

This PR addresses several items listed in our rubocop_todo by implementing the necessary corrections and enhancements. As a result, we are now able to remove the rubocop_todo file entirely, streamlining our codebase and ensuring adherence to our coding standards.

fixes: https://linear.app/chatwoot/issue/CW-1806/chore-rubocop-audit

lib/events/base.rb

@@ -9,6 +9,6 @@ class Events::Base
   end
 
   def method_name
-    name.to_s.gsub('.', '_')
+    name.to_s.tr('.', '_')
   end
 end