Remove teacher conversation discussion components

tests/e2e/pi-coding-first-chat.spec.ts

@@ -1879,6 +1879,12 @@ test('project consultations preserve student drafts and switch between work and
     await expect(composer).toHaveValue('保留我的草稿');
     await teacher.getByRole('button',{name:'我也说不清，你带我看看',exact:true}).click();
     await expect(teacher.getByText('你最近做的哪一步，让你停下来想了一会儿？')).toBeVisible();
+    await expect(teacher.getByTestId('teacher-discussion')).toHaveCount(0);
+    const consultationSends = (await readState(electronApp)).captured.filter(item => item.path.endsWith('/messages') && item.method === 'POST');
+    for (const sent of consultationSends) {
+      expect(sent.body).not.toHaveProperty('presentation');
+      expect(sent.body).not.toHaveProperty('discussion');
+    }
     await expect(teacher.getByRole('textbox',{name:'向智能体提问'})).toHaveValue('还没说完的困惑');
     await page.getByRole('tab',{name:'操作对话',exact:true}).click();
     await expect(composer).toBeVisible();