Add changelog entry for PR #2384

Co-authored-by: mmagician <8402446+mmagician@users.noreply.github.com>

Author: Copilot

CHANGELOG.md

@@ -13,6 +13,7 @@
 ### Changes
 
 - [BREAKING] Prefixed transaction kernel events with `miden::protocol` ([#2364](https://github.com/0xMiden/miden-base/pull/2364)).
+- [BREAKING] Simplified `NoteMetadata::new()` constructor to not require tag parameter; tag defaults to zero and can be set via `with_tag()` builder method ([#2384](https://github.com/0xMiden/miden-base/pull/2384)).
 - [BREAKING] Renamed `WellKnownComponent` to `StandardAccountComponent`, `WellKnownNote` to `StandardNote`, and `WellKnownNoteAttachment` to `StandardNoteAttachment` ([#2332](https://github.com/0xMiden/miden-base/pull/2332)).
 - Skip requests to the `DataStore` for asset vault witnesses which are already in transaction inputs ([#2298](https://github.com/0xMiden/miden-base/pull/2298)).
 - [BREAKING] Refactored `TransactionAuthenticator::get_public_key()` method to return `Arc<PublicKey> `instead of `&PublicKey` ([#2304](https://github.com/0xMiden/miden-base/pull/2304)).