headers timeout should not occur *after* headers have been
received.
Fixes: https://github.com/nodejs/node/issues/34576
PR-URL: https://github.com/nodejs/node/pull/34578
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Pranshu Srivastava <rexagod@gmail.com>