ui: show offline WeChat status without repeated card explanation

tests/e2e/cloud-agent-channels.spec.ts

@@ -575,7 +575,7 @@ test('WeChat binding cards connect an account and switch its Agent through the c
         '智能体的微信服务暂时离线，暂时无法自动回复。微信登录和智能体选择已保留，服务恢复后请刷新状态。',
         { exact: true }
       )
-    ).toBeVisible();
+    ).toHaveCount(0);
     await expect(legacyCard.getByText('状态待确认', { exact: true })).toHaveCount(0);
     await expect(spareCard.getByRole('button', { name: '绑定智能体', exact: true })).toBeVisible();
     await expect(page.getByRole('dialog')).toHaveCount(0);