url: ensure getter access do not mutate observable symbols
/cc @nodejs/url
Refs: https://github.com/nodejs/node/pull/48891 Refs: https://github.com/nodejs/node/issues/48886
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
/cc @nodejs/url
Refs: https://github.com/nodejs/node/pull/48891 Refs: https://github.com/nodejs/node/issues/48886