fix: add missing mocks in publish-spell.test.ts

- Add mock for @/services/relay-list-cache module
- Add pubkey property to account mock (required by PublishSpellAction
  which calls relayListCache.getOutboxRelays(account.pubkey))

The test was failing because PublishSpellAction.execute() now
fetches the author's outbox relays using the relay list cache.

src/actions/publish-spell.test.ts

@@ -68,8 +68,8 @@ describe("PublishSpellAction", () => {
 
     // @ts-expect-error: mocking internal state for test
     accountManager.active = {
-      signer: mockSigner,
       pubkey: "pubkey",
+      signer: mockSigner,
     };
 
     const spell: LocalSpell = {