test(native-chat): keep the doubt case in the tone test a real doubt

Since "Sending…" landed, an unconfirmed entry the probe still resends reads as
sending, so the case no longer tested the doubt tone. It is now one the user
already retried, as main's notices test does.

src/renderer/src/components/native-chat/structured-agent-session-delivery-notices-tone.test.ts

@@ -33,7 +33,7 @@ describe('the tone of a delivery line', () => {
   it('marks as not sent only words that say the message did not go out', () => {
     const notices = structuredAgentSessionDeliveryNotices(
       [
-        entry('doubt', { state: 'unconfirmed' }),
+        entry('doubt', { state: 'unconfirmed', retryAfterUnknownSubmittedAt: -1 }),
         entry('expired', {
           lastAttemptAt: 1,
           lastFailure: { kind: 'refused', code: 'agent_session_operation_expired' }