src: add HandleScope to fix error

Add `HandleError`s to the AsyncScope constructor and destructor in
async_wrap-inl.h to fix "FATAL ERROR" incurring observed while running
test-http2-respond-with-file using the --trace-events-enabled flag.

Fixes: https://github.com/nodejs/node/issues/19921

PR-URL: https://github.com/nodejs/node/pull/19972


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>