test: remove FLAKY status for fixed test

test-worker-message-port-transfer-terminate was fixed in
25447d82 but the status file was not updated to reflect this.

PR-URL: https://github.com/nodejs/node/pull/37633


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>