esm: prevent erroneous re-initialization of ESMLoader
Fixes https://github.com/nodejs/node/issues/43753
cc @cspotcode @daeyeon @nodejs/loaders
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/43753
cc @cspotcode @daeyeon @nodejs/loaders