Wrong Interpretation of URL encoded characters, showing different punny code leads to redirection on different domain

##Summary: There is wrong interpretation of URL encoded characters at `https://twitter.com/safety/unsafe_link_warning` endpoint which could lead to different location then what is supposed to. Although it shows warning but doesn't show warning about punny code characters. ##Description: On following characters: ``` %E2%80%AE - RTLO Character %E2%80%8E - LEFT-TO-RIGHT MARK %E2%80%91 - Non breaking hyphen %E2%80%A9 - PARAGRAPH SEPARATOR %E2%80%AA 0 Right-to-left embedding ``` Interpretation of these characters is different but when we click continue button it will redirect you to some other location. ## Steps To Reproduce: 1. Go to following URL: https://twitter.com/safety/unsafe_link_warning?unsafe_link=https%3A%2F%2F%E2%80%AEmoc.rettiwt 2. You will see that its showing : https://twitter.com {F522041} But originally you will be redirected to https://xn--moc-4t7s.rettiwt/ when you click continue button. ##Argument: > But it is not possible to have TLD 'rettiwt'. * counter: We can have URL as follows: ``` https://twitter.com/safety/unsafe_link_warning?unsafe_link=https%3A%2F%2F%E2%80%AEmoc.rettiwt.com ``` {F522042} ## Supporting Material/References: * screenshots. ## Impact Wrong location redirection.