repl: runtime deprecate `inputStream`, `outputStream` and `_builtinLibs`
These features have been doc-only deprecated for years (since v14!), so maybe they should finally be runtime deprecated?
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
These features have been doc-only deprecated for years (since v14!), so maybe they should finally be runtime deprecated?