refactor: 完善材质系统相关代码

- 修复 node-actions.ts 中 forEach 返回值 lint 警告
- 更新材质 schema 定义和渲染器
- wall-cutout.tsx 材质颜色保留修复

packages/viewer/src/components/renderers/roof-segment/roof-segment-renderer.tsx

@@ -35,4 +35,4 @@ export const RoofSegmentRenderer = ({ node }: { node: RoofSegmentNode }) => {
       <boxGeometry args={[0, 0, 0]} />
     </mesh>
   )
-}
+}