`input_fields` did not ensure_define
`input_fields` did not ensure_define

Based on the original order of execution, `input_fields` was still aliased to the un-`ensure_defined` version of `arguments`.
rmosolgo/graphql-ruby,nevesenin/graphql-ruby,xuorig/graphql-ruby,nevesenin/graphql-ruby,rmosolgo/graphql-ruby,xuorig/graphql-ruby,rmosolgo/graphql-ruby,xuorig/graphql-ruby,rmosolgo/graphql-ruby,nevesenin/graphql-ruby,nevesenin/graphql-ruby