Register `handleResponseComplete` finish listener early
Register `handleResponseComplete` finish listener early

Before calling `res.end()`.  Stab in the dark at addressing PLAT-527.

emecell/react-server,redfin/react-server,redfin/react-server,davidalber/react-server,emecell/react-server,lidawang/react-server,lidawang/react-server,doug-wade/react-server,szhou8813/react-server,szhou8813/react-server,doug-wade/react-server,davidalber/react-server