http: simplify checkInvalidHeaderChar

In the spirit of [17399](https://github.com/nodejs/node/pull/17399),
we can also simplify checkInvalidHeaderChar to use regex matching
instead of a loop. This makes it faster on long matches and slower
on short matches or non-matches. This change also includes some
sample data from an AcmeAir benchmark run, as a rough proxy for
real-world data.

PR-URL: https://github.com/nodejs/node/pull/18381


Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>