quic: sendHeaders with non conforming path

While writing a webtransport test, I forgot on the client side a beginning '/' in the path, so something like `':path': 'testwtpath'` . I do not think that this was reported back to js side on the server side. (it is detected in side nghttp3). I wonder if this is a problem or if the behaviour is fine. (I did not looked deeper into it, it was just by accident or stupidity).