Autofix Rubocop Style/RedundantBegin (#23703)

app/helpers/domain_control_helper.rb

@@ -4,13 +4,11 @@ module DomainControlHelper
   def domain_not_allowed?(uri_or_domain)
     return if uri_or_domain.blank?
 
-    domain = begin
-      if uri_or_domain.include?('://')
-        Addressable::URI.parse(uri_or_domain).host
-      else
-        uri_or_domain
-      end
-    end
+    domain = if uri_or_domain.include?('://')
+               Addressable::URI.parse(uri_or_domain).host
+             else
+               uri_or_domain
+             end
 
     if whitelist_mode?
       !DomainAllow.allowed?(domain)