fix: 修复图层和工具管理器中的子图层访问逻辑，确保正确处理子图层

src/component/Canvas/CanvasEditor/managers/LayerManager.js

@@ -336,7 +336,7 @@ export class LayerManager {
     const layerMap = {};
     layers.forEach((layer) => {
       layerMap[layer.id] = layer;
-      layers?.children?.forEach((childLayer) => {
+      layer?.children?.forEach((childLayer) => {
         layerMap[childLayer.id] = childLayer;
       });
     });
@@ -359,7 +359,7 @@ export class LayerManager {
       await this._setObjectInteractivity(obj, layer, editorMode);
 
       // 设置子图层对象的交互性
-      layer?.childLayer?.forEach(async (childLayer) => {
+      layer?.children?.forEach(async (childLayer) => {
         const childObj = this.canvas
           .getObjects()
           .find((o) => o.layerId === childLayer.id);