修复印花编辑界面重复对画布上添加

src/component/Detail/DesignDetail.vue

@@ -190,7 +190,7 @@ export default defineComponent({
 		watch(()=>detailData.selectDetail,async (newValue,oldValue)=>{
 			detailData.imgDomIndex = detailData.frontBack.front.findIndex((item:any)=>item.id == newValue.id)
 			if(newValue?.path)await getSketchSize()
-			if(newValue?.id && (newValue.id != oldValue.id)){
+			if(newValue?.id && (newValue?.id != oldValue?.id)){
 				store.commit('DesignDetail/changeCanvasKey')
 			}
 			// privewDetail(oldValue)