refactor(WmsMaterialCoilService): 简化合卷操作逻辑

- 移除冗余的parent_coil_ids检查代码
- 直接返回MERGE_PRODUCT状态值
- 优化合卷操作的判断流程

klp-wms/src/main/java/com/klp/service/impl/WmsMaterialCoilServiceImpl.java

@@ -3053,13 +3053,7 @@ public class WmsMaterialCoilServiceImpl implements IWmsMaterialCoilService {
 
                 // 2. 检查合卷操作（最新操作优先）
                 if ("合卷".equals(operation)) {
-                    Object parentCoilIdsObj = step.get("parent_coil_ids");
-                    if (parentCoilIdsObj != null) {
-                        String parentCoilIdsStr = parentCoilIdsObj.toString();
-                        if (parentCoilIdsStr.contains(currentCoilIdStr)) {
-                            return "MERGE_PRODUCT";
-                        }
-                    }
+                    return "MERGE_PRODUCT";
                 }
 
                 // 3. 检查分卷操作