fast-uri vulnerable to host confusion via unchecked WHATWG host canonicalization

Impact fast-uri versions = 2.4.2, = 3.1.3, = 4.0.1, = 4.2.2 can silently rewrite the host of an HTTP-family URL http, https, ws, wss, or any scheme with domainHost: true. For those schemes canonicalizeHost passes the parsed host to the WHATWG URL parser and adopts its .hostname without checking...