test: fix sequential/test-performance delay

PR-URL: https://github.com/nodejs/node/pull/25695
Fixes: https://github.com/nodejs/node/issues/23291


Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>