fix(wechat): yield schedule handler when scheduled-task intent matches

Stop schedule todo replies from intercepting cancel/list/create automation
requests, and recognize 有哪些 for inbound scheduled task listing.

Co-authored-by: Cursor <cursoragent@cursor.com>

scheduled-task-intent.test.mjs

@@ -47,6 +47,7 @@ test('scheduled automation takes precedence over schedule assistant keyword over
 test('parses cancel and list intents', () => {
   assert.equal(parseScheduledTaskIntent('取消我的定时任务').action, 'cancel_scheduled_task');
   assert.equal(parseScheduledTaskIntent('看看我的定时自动任务').action, 'list_scheduled_tasks');
+  assert.equal(parseScheduledTaskIntent('我有哪些定时任务').action, 'list_scheduled_tasks');
 });
 
 test('parses one-shot tonight schedule with task spec', () => {