fix(inventory): 解决导入SN数据时状态设置时机问题

- 将isImported状态设置移到下一个DOM更新周期后执行
- 确保表格选择操作完成后再更新导入状态
- 避免因状态设置过早导致的UI更新异常

oms_web/oms_vue/src/views/inventory/outer/components/GenerateDeliveryForm.vue

@@ -235,12 +235,14 @@ export default {
         this.total = this.snList.length;
         this.queryParams.pageNum = 1;
         this.queryParams.pageSize = this.total;
-        this.isImported = true;
         this.$nextTick(() => {
           if (this.$refs.snTable) {
             this.$refs.snTable.clearSelection();
             this.$refs.snTable.toggleAllSelection();
             this.selectedSnList = this.snList;
+            this.$nextTick(() => {
+              this.isImported = true;
+            });
           }
         });
       }).catch(() => {