async_hooks,process: remove internalNextTick

Instead of having mostly duplicate code in form of internalNextTick,
instead use the existing defaultAsyncTriggerIdScope with a slight
modification which allows undefined triggerAsyncId to be passed in,
which then just triggers the callback with the provided arguments.

PR-URL: https://github.com/nodejs/node/pull/19147
Refs: https://github.com/nodejs/node/issues/19104


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Andreas Madsen <amwebdk@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>