HyperbahnHandler: flatten branching in #handleRelay
HyperbahnHandler: flatten branching in #handleRelay

savaki/tchannel,i/tchannel,i/tchannel,RyanTech/tchannel,vanloswang/tchannel,hustxiaoc/tchannel,savaki/tchannel,RyanTech/tchannel,vanloswang/tchannel,sasa233/tchannel,chenwenbin928/tchannel,bunnyblue/tchannel,sasa233/tchannel,chenwenbin928/tchannel,hustxiaoc/tchannel,bunnyblue/tchannel,chenwenbin928/tchannel,bunnyblue/tchannel,sasa233/tchannel,hustxiaoc/tchannel,RyanTech/tchannel,savaki/tchannel,vanloswang/tchannel,i/tchannel