fix: relays tag missing

packages/system/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@snort/system",
-  "version": "1.5.2",
+  "version": "1.5.3",
   "description": "Snort nostr system package",
   "type": "module",
   "main": "dist/index.js",

packages/system/src/note-collection.ts

@@ -72,7 +72,7 @@ export class KeyedReplaceableNoteStore extends HookedNoteStore {
       const existing = this.#events.get(keyOnEvent);
       if (a.created_at > (existing?.created_at ?? 0)) {
         if (existing) {
-          a.relays = dedupe([...existing.relays, ...a.relays]);
+          a.relays = dedupe([...(existing.relays ?? []), ...a.relays]);
         }
         this.#events.set(keyOnEvent, a);
         changes.push(a);