Change how we look up constants

Author: rhemsing

lib/polymorphic_integer_type/extensions.rb

@@ -95,7 +95,7 @@ def remove_type_and_establish_mapping(name, options, scope)
       def retrieve_polymorphic_type_mapping(polymorphic_type:, class_name:)
         return if polymorphic_type.nil?
 
-        belongs_to_class = class_name.safe_constantize
+        belongs_to_class = compute_type(class_name)
         method_name = "#{polymorphic_type}_type_mapping"
 
         if belongs_to_class && belongs_to_class.respond_to?(method_name)