test: mark `test-worker-prof` as Flaky on ARM

PR-URL: https://github.com/nodejs/node/pull/26557
Refs: https://github.com/nodejs/node/issues/26401


Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>