When async hooks integration for Timers was introduced, it was
not included in the code for unref'd or subsequently ref'd
timers which means those timers only have Timerwrap hooks.
PR-URL: https://github.com/nodejs/node/pull/18579
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
