Fix Rails/Present cop (#24688)

.rubocop_todo.yml

@@ -1399,12 +1399,6 @@ Rails/OutputSafety:
   Exclude:
     - 'config/initializers/simple_form.rb'
 
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: NotNilAndNotEmpty, NotBlank, UnlessBlank.
-Rails/Present:
-  Exclude:
-    - 'config/initializers/content_security_policy.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: Include.
 # Include: **/Rakefile, **/*.rake

config/initializers/content_security_policy.rb

@@ -3,7 +3,7 @@
 # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
 
 def host_to_url(str)
-  "http#{Rails.configuration.x.use_https ? 's' : ''}://#{str}" unless str.blank?
+  "http#{Rails.configuration.x.use_https ? 's' : ''}://#{str}" if str.present?
 end
 
 base_host = Rails.configuration.x.web_domain