src: do not crash if ToggleAsyncHook fails during termination

In the termination case, we should not crash. There’s also no harm
being done by ignoring the termination exception here, since the
thread is about to be torn down anyway.

Also, add a guard against running this during shutdown. That is the
likely cause of https://github.com/nodejs/node/issues/34361.

Fixes: https://github.com/nodejs/node/issues/34361

PR-URL: https://github.com/nodejs/node/pull/34362
Fixes: https://github.com/nodejs/node/issues/27261


Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>