Preserve partial creation replies on stream failure

src/components/custom-world-home/CustomWorldCreationHub.interaction.test.tsx

@@ -107,12 +107,17 @@ test('creation hub reflects updated draft title summary and counts after rerende
   const rpgButton = screen.getByRole('button', { name: /角色扮演/u });
   const puzzleButton = screen.getByRole('button', { name: /拼图.*创意礼物/u });
   const match3dButton = screen.getByRole('button', { name: /抓大鹅/u });
+  const squareHoleButton = screen.getByRole('button', { name: /方洞挑战/u });
   expect(
     rpgButton.compareDocumentPosition(puzzleButton) &
       Node.DOCUMENT_POSITION_FOLLOWING,
   ).toBeTruthy();
   expect((rpgButton as HTMLButtonElement).disabled).toBe(false);
   expect((match3dButton as HTMLButtonElement).disabled).toBe(false);
+  expect((squareHoleButton as HTMLButtonElement).disabled).toBe(false);
+  expect(
+    within(squareHoleButton).getAllByText('反直觉形状分拣').length,
+  ).toBeGreaterThan(0);
   expect(
     within(match3dButton).getAllByText('经典消除玩法').length,
   ).toBeGreaterThan(0);