feat: 优化填充组图层背景命令，支持实时更新和撤销功能，改进填充对象的处理逻辑

src/component/Canvas/CanvasEditor/utils/LayerSort.js

@@ -96,10 +96,10 @@ export class LayerSort {
    * @returns {number} 更新后的z-index
    */
   processLayerObjects(layer, currentZIndex, zIndexMap) {
-    if (layer.fill) {
-      // 如果图层有填充，则填充在最底层
-      zIndexMap.set(layer.fill.id, currentZIndex++);
-    }
+    // if (layer.fill) {
+    //   // 如果图层有填充，则填充在最底层
+    //   zIndexMap.set(layer.fill.id, currentZIndex++);
+    // }
     // 检查是否有子图层（组图层）
     if (layer.children?.length > 0) {
       // 处理每个子图层

src/component/Canvas/CanvasEditor/utils/rasterizedImage.js

@@ -391,13 +391,17 @@ const createRasterizedImageWithMask = async ({
  */
 const cloneObjectAsync = (obj) => {
   return new Promise((resolve, reject) => {
-    obj.clone((cloned) => {
-      if (cloned) {
-        resolve(cloned);
-      } else {
-        reject(new Error("对象克隆失败"));
-      }
-    });
+    try {
+      obj?.clone?.((cloned) => {
+        if (cloned) {
+          resolve(cloned);
+        } else {
+          reject(new Error("对象克隆失败"));
+        }
+      }, {});
+    } catch (error) {
+      reject(new Error(`克隆对象时发生错误: ${error.message}`));
+    }
   });
 };