fix: keep channel typing active during long inference (#25886, thanks @stakeswky)

Co-authored-by: stakeswky <stakeswky@users.noreply.github.com>

src/signal/monitor/event-handler.ts

@@ -238,6 +238,8 @@ export function createSignalEventHandler(deps: SignalEventHandlerDeps) {
         deps.runtime.error?.(danger(`signal ${info.kind} reply failed: ${String(err)}`));
       },
       onReplyStart: typingCallbacks.onReplyStart,
+      onIdle: typingCallbacks.onIdle,
+      onCleanup: typingCallbacks.onCleanup,
     });
 
     const { queuedFinal } = await dispatchInboundMessage({