test: close fds properly in tests
Otherwise the unclosed fd may keep the file open which makes subsequent rmdir attempts failed at exit.
https://github.com/nodejs/node/pull/38826#issuecomment-851932258
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Otherwise the unclosed fd may keep the file open which makes subsequent rmdir attempts failed at exit.
https://github.com/nodejs/node/pull/38826#issuecomment-851932258