lib: reset `RegExp` statics before running user code
Fixes: https://github.com/nodejs/node/issues/43740 (well technically it fixes only half of it, but the other half is a duplicate of https://github.com/nodejs/node/issues/18931)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Fixes: https://github.com/nodejs/node/issues/43740 (well technically it fixes only half of it, but the other half is a duplicate of https://github.com/nodejs/node/issues/18931)