chore(next): cleans up initReq

[jacobsfletch]

The req property returned from initReq does not include the user as expected, and instead returns user and i18n separately (and in the case of i18n, duplicately). This function was also unnecessary instantiating a new local req object just to override the url and query properties. Instead of doing this, we can simply create a new instance of this object and modify necessary properties without mutating the original instance.