http: switch default parser to llhttp

Refs: https://github.com/nodejs/node/pull/24739
Fixes: https://github.com/nodejs/node/issues/24730

PR-URL: https://github.com/nodejs/node/pull/24870


Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>