http: used already defined validator for boolean check

We already importing the validator for integer check. So leveraging the
boolean check validator to remove already defined logic in the code and
thus making it DRY.

PR-URL: https://github.com/nodejs/node/pull/33731


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>