Tunnel connections that close before a response always shut down now, instead of lingering.
What's wrong with this entry?
When an agent-proxy tunnel closes before a response arrives, the socket is now destroyed in all cases, removing a path where non-v2 connections could linger after a graceful end.
- The branch that ended the socket gracefully for non-v2 connections was removed from the teardown path
- The socket is destroyed unconditionally after "tunnel closed before response"
tunnel closed before response
Strings lifted out of the shipped bundle, so the claim above can be checked against them.