addition check if prev_type Array contains type

Author: TSMMark

lib/graphql/schema/addition.rb

@@ -151,7 +151,7 @@ def add_type(type, owner:, late_types:, path:)
           um << owner
         end
 
-        if (prev_type = get_local_type(type.graphql_name)) && prev_type == type
+        if (prev_type = get_local_type(type.graphql_name)) && (prev_type == type || (prev_type.is_a?(Array) && prev_type.include?(type)))
           # No need to re-visit
         elsif type.is_a?(Class) && type < GraphQL::Schema::Directive
           @directives << type