perf_hooks: fix PerformanceObserver gc crash

Signed-off-by: James M Snell <jasnell@gmail.com>
Fixes: https://github.com/nodejs/node/issues/39548

PR-URL: https://github.com/nodejs/node/pull/39550


Reviewed-By: Bryan English <bryan@bryanenglish.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>